diff --git a/app/Http/Controllers/Api/Tenant/EventAddonController.php b/app/Http/Controllers/Api/Tenant/EventAddonController.php
index 759aad51..bf2bf99b 100644
--- a/app/Http/Controllers/Api/Tenant/EventAddonController.php
+++ b/app/Http/Controllers/Api/Tenant/EventAddonController.php
@@ -4,10 +4,13 @@ namespace App\Http\Controllers\Api\Tenant;
 
 use App\Http\Controllers\Controller;
 use App\Http\Requests\Tenant\EventAddonCheckoutRequest;
+use App\Http\Requests\Tenant\EventAddonPurchaseLookupRequest;
 use App\Models\Event;
+use App\Models\EventPackageAddon;
 use App\Services\Addons\EventAddonCheckoutService;
 use App\Support\ApiError;
 use Illuminate\Http\JsonResponse;
+use Illuminate\Support\Arr;
 
 class EventAddonController extends Controller
 {
@@ -48,4 +51,100 @@ class EventAddonController extends Controller
             'expires_at' => $checkout['expires_at'] ?? null,
         ]);
     }
+
+    public function purchase(EventAddonPurchaseLookupRequest $request, Event $event): JsonResponse
+    {
+        $tenantId = $request->attributes->get('tenant_id');
+
+        if ($event->tenant_id !== $tenantId) {
+            return ApiError::response(
+                'event_not_found',
+                'Event not accessible',
+                __('Das Event konnte nicht gefunden werden.'),
+                404,
+                ['event_slug' => $event->slug ?? null]
+            );
+        }
+
+        $validated = $request->validated();
+        $addonIntent = trim((string) ($validated['addon_intent'] ?? ''));
+        $checkoutId = trim((string) ($validated['checkout_id'] ?? ''));
+        $addonKey = trim((string) ($validated['addon_key'] ?? ''));
+
+        $baseQuery = EventPackageAddon::query()
+            ->where('tenant_id', $tenantId)
+            ->where('event_id', $event->id)
+            ->with(['event:id,name,slug']);
+
+        $addon = null;
+
+        if ($addonIntent !== '') {
+            $addon = (clone $baseQuery)
+                ->where('metadata->addon_intent', $addonIntent)
+                ->orderByDesc('created_at')
+                ->first();
+        }
+
+        if (! $addon && $checkoutId !== '') {
+            $addon = (clone $baseQuery)
+                ->where('checkout_id', $checkoutId)
+                ->orderByDesc('created_at')
+                ->first();
+        }
+
+        if (! $addon && $addonKey !== '') {
+            $addon = (clone $baseQuery)
+                ->where('addon_key', $addonKey)
+                ->orderByRaw("case status when 'completed' then 0 when 'pending' then 1 else 2 end")
+                ->orderByDesc('purchased_at')
+                ->orderByDesc('created_at')
+                ->first();
+        }
+
+        if (! $addon) {
+            $addon = (clone $baseQuery)
+                ->orderByRaw("case status when 'completed' then 0 when 'pending' then 1 else 2 end")
+                ->orderByDesc('purchased_at')
+                ->orderByDesc('created_at')
+                ->first();
+        }
+
+        if (! $addon) {
+            return ApiError::response(
+                'addon_not_found',
+                'Add-on purchase not found',
+                __('Der Add-on Kauf wurde nicht gefunden.'),
+                404,
+                ['event_slug' => $event->slug ?? null]
+            );
+        }
+
+        $label = Arr::get($addon->metadata ?? [], 'label') ?? $addon->addon_key;
+
+        return response()->json([
+            'data' => [
+                'id' => $addon->id,
+                'addon_key' => $addon->addon_key,
+                'label' => $label,
+                'quantity' => (int) ($addon->quantity ?? 1),
+                'status' => $addon->status,
+                'amount' => $addon->amount !== null ? (float) $addon->amount : null,
+                'currency' => $addon->currency,
+                'extra_photos' => (int) $addon->extra_photos,
+                'extra_guests' => (int) $addon->extra_guests,
+                'extra_gallery_days' => (int) $addon->extra_gallery_days,
+                'purchased_at' => $addon->purchased_at?->toIso8601String(),
+                'receipt_url' => Arr::get($addon->receipt_payload, 'receipt_url'),
+                'checkout_id' => $addon->checkout_id,
+                'transaction_id' => $addon->transaction_id,
+                'created_at' => $addon->created_at?->toIso8601String(),
+                'addon_intent' => Arr::get($addon->metadata ?? [], 'addon_intent'),
+                'event' => $addon->event ? [
+                    'id' => $addon->event->id,
+                    'slug' => $addon->event->slug,
+                    'name' => $addon->event->name,
+                ] : null,
+            ],
+        ]);
+    }
 }
diff --git a/app/Http/Requests/Tenant/EventAddonPurchaseLookupRequest.php b/app/Http/Requests/Tenant/EventAddonPurchaseLookupRequest.php
new file mode 100644
index 00000000..305161b6
--- /dev/null
+++ b/app/Http/Requests/Tenant/EventAddonPurchaseLookupRequest.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Http\Requests\Tenant;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class EventAddonPurchaseLookupRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'addon_intent' => ['nullable', 'string', 'max:191'],
+            'checkout_id' => ['nullable', 'string', 'max:191'],
+            'addon_key' => ['nullable', 'string', 'max:191'],
+        ];
+    }
+}
diff --git a/app/Services/Addons/EventAddonCheckoutService.php b/app/Services/Addons/EventAddonCheckoutService.php
index 49262601..4938fe01 100644
--- a/app/Services/Addons/EventAddonCheckoutService.php
+++ b/app/Services/Addons/EventAddonCheckoutService.php
@@ -86,6 +86,8 @@ class EventAddonCheckoutService
         $addonMetadata = $this->resolveAddonMetadata($addon);
         $entitlements = $this->resolveAddonEntitlements($addonKey, $addonMetadata);
         $price = $this->catalog->resolvePrice($addonKey);
+        $successUrl = $this->appendQueryParam($payload['success_url'] ?? null, 'addon_intent', $addonIntent);
+        $cancelUrl = $this->appendQueryParam($payload['cancel_url'] ?? null, 'addon_intent', $addonIntent);
 
         $providerMetadata = array_filter([
             'tenant_id' => (string) $tenant->id,
@@ -98,13 +100,13 @@ class EventAddonCheckoutService
             'legal_version' => $this->resolveLegalVersion(),
             'accepted_terms' => $acceptedTerms ? '1' : '0',
             'accepted_waiver' => $acceptedWaiver ? '1' : '0',
-            'success_url' => $payload['success_url'] ?? null,
-            'cancel_url' => $payload['cancel_url'] ?? null,
+            'success_url' => $successUrl,
+            'cancel_url' => $cancelUrl,
         ], static fn ($value) => $value !== null && $value !== '');
 
         $response = $this->checkout->createVariantCheckout($variantId, $providerMetadata, [
-            'success_url' => $payload['success_url'] ?? null,
-            'return_url' => $payload['cancel_url'] ?? null,
+            'success_url' => $successUrl,
+            'return_url' => $cancelUrl,
             'customer_email' => $tenant->contact_email ?? $tenant->user?->email,
         ]);
 
@@ -227,7 +229,9 @@ class EventAddonCheckoutService
         ]);
 
         $successUrl = $payload['success_url'] ?? null;
+        $successUrl = $this->appendQueryParam($successUrl, 'addon_intent', $addonIntent);
         $cancelUrl = $payload['cancel_url'] ?? $successUrl;
+        $cancelUrl = $this->appendQueryParam($cancelUrl, 'addon_intent', $addonIntent);
         $paypalReturnUrl = route('paypal.addon.return', absolute: true);
 
         try {
@@ -312,6 +316,23 @@ class EventAddonCheckoutService
         return config('app.legal_version', now()->toDateString());
     }
 
+    protected function appendQueryParam(?string $url, string $key, string $value): ?string
+    {
+        if (! is_string($url) || trim($url) === '') {
+            return null;
+        }
+
+        [$base, $fragment] = array_pad(explode('#', $url, 2), 2, null);
+        $separator = str_contains($base, '?') ? '&' : '?';
+        $next = $base.$separator.rawurlencode($key).'='.rawurlencode($value);
+
+        if ($fragment === null) {
+            return $next;
+        }
+
+        return $next.'#'.$fragment;
+    }
+
     /**
      * @param  array<string, mixed>  $addon
      */
diff --git a/resources/js/admin/api.ts b/resources/js/admin/api.ts
index 84be9761..94dfaee4 100644
--- a/resources/js/admin/api.ts
+++ b/resources/js/admin/api.ts
@@ -667,6 +667,13 @@ export type TenantAddonHistoryEntry = {
   receipt_url?: string | null;
 };
 
+export type EventAddonPurchaseSummary = TenantAddonHistoryEntry & {
+  checkout_id: string | null;
+  transaction_id: string | null;
+  created_at: string | null;
+  addon_intent?: string | null;
+};
+
 export type TenantBillingAddonScope = {
   type: 'tenant' | 'event';
   event: TenantAddonEventSummary | null;
@@ -1435,6 +1442,18 @@ function normalizeTenantAddonHistoryEntry(entry: JsonValue): TenantAddonHistoryE
   };
 }
 
+function normalizeEventAddonPurchaseSummary(entry: JsonValue): EventAddonPurchaseSummary {
+  const base = normalizeTenantAddonHistoryEntry(entry);
+
+  return {
+    ...base,
+    checkout_id: typeof entry.checkout_id === 'string' ? entry.checkout_id : null,
+    transaction_id: typeof entry.transaction_id === 'string' ? entry.transaction_id : null,
+    created_at: typeof entry.created_at === 'string' ? entry.created_at : null,
+    addon_intent: typeof entry.addon_intent === 'string' ? entry.addon_intent : null,
+  };
+}
+
 function normalizeTask(task: JsonValue): TenantTask {
   const titleTranslations = normalizeTranslationMap(task.title_translations ?? task.title ?? {});
   const descriptionTranslations = normalizeTranslationMap(task.description_translations ?? task.description ?? {});
@@ -2013,6 +2032,46 @@ export async function createEventAddonCheckout(
   );
 }
 
+export async function getEventAddonPurchase(
+  eventSlug: string,
+  options?: {
+    addonIntent?: string;
+    checkoutId?: string;
+    addonKey?: string;
+  }
+): Promise<EventAddonPurchaseSummary | null> {
+  const params = new URLSearchParams();
+
+  if (options?.addonIntent) {
+    params.set('addon_intent', options.addonIntent);
+  }
+
+  if (options?.checkoutId) {
+    params.set('checkout_id', options.checkoutId);
+  }
+
+  if (options?.addonKey) {
+    params.set('addon_key', options.addonKey);
+  }
+
+  const query = params.toString();
+  const response = await authorizedFetch(
+    `${eventEndpoint(eventSlug)}/addons/purchase${query ? `?${query}` : ''}`
+  );
+
+  if (response.status === 404) {
+    return null;
+  }
+
+  const payload = await jsonOrThrow<{ data?: JsonValue }>(response, 'Failed to load add-on purchase');
+
+  if (!payload.data || typeof payload.data !== 'object') {
+    return null;
+  }
+
+  return normalizeEventAddonPurchaseSummary(payload.data);
+}
+
 export async function getAddonCatalog(): Promise<EventAddonCatalogItem[]> {
   const response = await authorizedFetch('/api/v1/tenant/addons/catalog');
   const data = await jsonOrThrow<{ data?: EventAddonCatalogItem[] }>(response, 'Failed to load add-ons');
diff --git a/resources/js/admin/constants.ts b/resources/js/admin/constants.ts
index 49561df4..5c4d82b7 100644
--- a/resources/js/admin/constants.ts
+++ b/resources/js/admin/constants.ts
@@ -36,6 +36,8 @@ export const ADMIN_EVENT_GUEST_NOTIFICATIONS_PATH = (slug: string): string =>
   adminPath(`/mobile/events/${encodeURIComponent(slug)}/guest-notifications`);
 export const ADMIN_EVENT_RECAP_PATH = (slug: string): string => adminPath(`/mobile/events/${encodeURIComponent(slug)}/recap`);
 export const ADMIN_EVENT_ADDONS_PATH = (slug: string): string => adminPath(`/mobile/events/${encodeURIComponent(slug)}/addons`);
+export const ADMIN_EVENT_ADDON_SUCCESS_PATH = (slug: string): string =>
+  adminPath(`/mobile/events/${encodeURIComponent(slug)}/addons/success`);
 export const ADMIN_EVENT_BRANDING_PATH = (slug: string): string => adminPath(`/mobile/events/${encodeURIComponent(slug)}/branding`);
 export const ADMIN_EVENT_LIVE_SHOW_PATH = (slug: string): string => adminPath(`/mobile/events/${encodeURIComponent(slug)}/live-show`);
 export const ADMIN_EVENT_LIVE_SHOW_SETTINGS_PATH = (slug: string): string =>
diff --git a/resources/js/admin/i18n/locales/de/management.json b/resources/js/admin/i18n/locales/de/management.json
index 0593a314..173f4809 100644
--- a/resources/js/admin/i18n/locales/de/management.json
+++ b/resources/js/admin/i18n/locales/de/management.json
@@ -518,6 +518,30 @@
         "gallery": "Galerie-Laufzeit",
         "bundle": "Bundles",
         "feature": "Feature-Freischaltungen"
+      },
+      "success": {
+        "title": "Add-on-Kauf",
+        "loadFailed": "Kaufergebnis konnte nicht geladen werden.",
+        "notFound": "Dieser Kauf wird noch bestätigt.",
+        "statusUnknown": "Unbekannt",
+        "completedTitle": "Kauf abgeschlossen",
+        "completedBody": "Dein Event-Add-on ist jetzt aktiv, die Limits aktualisieren sich in Kürze.",
+        "pendingTitle": "Kauf in Bearbeitung",
+        "pendingBody": "Deine Zahlung wird noch bestätigt.",
+        "failedTitle": "Kauf fehlgeschlagen",
+        "failedBody": "Die Zahlung konnte nicht abgeschlossen werden. Du kannst es erneut versuchen.",
+        "summaryTitle": "Kaufübersicht",
+        "addonType": "Add-on",
+        "amount": "Betrag",
+        "quantity": "Menge",
+        "purchasedAt": "Gekauft am",
+        "checkoutId": "Checkout-ID",
+        "transactionId": "Transaktions-ID",
+        "nextTitle": "Was jetzt?",
+        "backToAddons": "Zurück zum Add-on-Manager",
+        "openControlRoom": "Control Room öffnen",
+        "openBilling": "Billing öffnen",
+        "backToEvent": "Zurück zum Event"
       }
     },
     "form": {
diff --git a/resources/js/admin/i18n/locales/en/management.json b/resources/js/admin/i18n/locales/en/management.json
index 59cf8ba6..d88ed20e 100644
--- a/resources/js/admin/i18n/locales/en/management.json
+++ b/resources/js/admin/i18n/locales/en/management.json
@@ -514,6 +514,30 @@
         "gallery": "Gallery runtime",
         "bundle": "Bundles",
         "feature": "Feature unlocks"
+      },
+      "success": {
+        "title": "Add-on purchase",
+        "loadFailed": "Purchase result could not be loaded.",
+        "notFound": "We are still confirming this purchase.",
+        "statusUnknown": "Unknown",
+        "completedTitle": "Purchase completed",
+        "completedBody": "Your event add-on is now active and limits update shortly.",
+        "pendingTitle": "Purchase in progress",
+        "pendingBody": "We are still processing your payment confirmation.",
+        "failedTitle": "Purchase failed",
+        "failedBody": "The payment could not be completed. You can try again.",
+        "summaryTitle": "Purchase summary",
+        "addonType": "Add-on",
+        "amount": "Amount",
+        "quantity": "Quantity",
+        "purchasedAt": "Purchased at",
+        "checkoutId": "Checkout ID",
+        "transactionId": "Transaction ID",
+        "nextTitle": "What next?",
+        "backToAddons": "Back to add-on manager",
+        "openControlRoom": "Open control room",
+        "openBilling": "Open billing",
+        "backToEvent": "Back to event"
       }
     },
     "form": {
diff --git a/resources/js/admin/mobile/EventAddonSuccessPage.tsx b/resources/js/admin/mobile/EventAddonSuccessPage.tsx
new file mode 100644
index 00000000..8c55e22e
--- /dev/null
+++ b/resources/js/admin/mobile/EventAddonSuccessPage.tsx
@@ -0,0 +1,306 @@
+import React from 'react';
+import { useLocation, useNavigate, useParams } from 'react-router-dom';
+import { useTranslation } from 'react-i18next';
+import { CheckCircle2, Clock3, AlertTriangle, ReceiptText, Sparkles } from 'lucide-react';
+import { YStack, XStack } from '@tamagui/stacks';
+import { SizableText as Text } from '@tamagui/text';
+
+import { EventAddonPurchaseSummary, getEvent, getEventAddonPurchase, TenantEvent } from '../api';
+import { getApiErrorMessage } from '../lib/apiError';
+import { adminPath, ADMIN_BILLING_PATH, ADMIN_EVENT_ADDONS_PATH, ADMIN_EVENT_CONTROL_ROOM_PATH, ADMIN_EVENT_VIEW_PATH } from '../constants';
+import { useBackNavigation } from './hooks/useBackNavigation';
+import { useAdminTheme } from './theme';
+import { MobileShell } from './components/MobileShell';
+import { CTAButton, MobileCard, PillBadge, SkeletonCard } from './components/Primitives';
+import { resolveEventDisplayName } from '../lib/events';
+
+function formatAmount(value: number | null, currency: string | null): string {
+  if (value === null || value === undefined) {
+    return '—';
+  }
+
+  const resolvedCurrency = currency ?? 'EUR';
+
+  try {
+    return new Intl.NumberFormat(undefined, { style: 'currency', currency: resolvedCurrency }).format(value);
+  } catch {
+    return `${value} ${resolvedCurrency}`;
+  }
+}
+
+function formatDateTime(value: string | null | undefined): string {
+  if (!value) {
+    return '—';
+  }
+
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return '—';
+  }
+
+  return date.toLocaleString(undefined, {
+    day: '2-digit',
+    month: 'short',
+    year: 'numeric',
+    hour: '2-digit',
+    minute: '2-digit',
+  });
+}
+
+async function launchConfetti(): Promise<void> {
+  if (typeof window === 'undefined') {
+    return;
+  }
+
+  const prefersReducedMotion = window.matchMedia?.('(prefers-reduced-motion: reduce)')?.matches;
+  if (prefersReducedMotion) {
+    return;
+  }
+
+  try {
+    const { default: confetti } = await import('canvas-confetti');
+
+    confetti({
+      particleCount: 80,
+      spread: 70,
+      origin: { x: 0.5, y: 0.3 },
+      ticks: 180,
+      scalar: 0.95,
+    });
+
+    setTimeout(() => {
+      confetti({
+        particleCount: 50,
+        spread: 90,
+        origin: { x: 0.5, y: 0.2 },
+        ticks: 140,
+        scalar: 0.8,
+      });
+    }, 260);
+  } catch {}
+}
+
+export default function MobileEventAddonSuccessPage() {
+  const { slug } = useParams<{ slug: string }>();
+  const navigate = useNavigate();
+  const location = useLocation();
+  const { t } = useTranslation('management');
+  const { textStrong, text, muted, border, successText, warningText, danger, primary } = useAdminTheme();
+  const back = useBackNavigation(slug ? ADMIN_EVENT_ADDONS_PATH(slug) : adminPath('/mobile/events'));
+
+  const [event, setEvent] = React.useState<TenantEvent | null>(null);
+  const [purchase, setPurchase] = React.useState<EventAddonPurchaseSummary | null>(null);
+  const [loading, setLoading] = React.useState(true);
+  const [error, setError] = React.useState<string | null>(null);
+  const confettiTriggeredRef = React.useRef(false);
+
+  const query = React.useMemo(() => {
+    const params = new URLSearchParams(location.search);
+
+    return {
+      addonIntent: params.get('addon_intent') ?? undefined,
+      checkoutId: params.get('checkout_id') ?? undefined,
+      addonKey: params.get('addon_key') ?? undefined,
+    };
+  }, [location.search]);
+
+  const load = React.useCallback(async () => {
+    if (!slug) {
+      return;
+    }
+
+    setLoading(true);
+
+    try {
+      const [eventData, purchaseData] = await Promise.all([
+        getEvent(slug),
+        getEventAddonPurchase(slug, {
+          addonIntent: query.addonIntent,
+          checkoutId: query.checkoutId,
+          addonKey: query.addonKey,
+        }),
+      ]);
+
+      setEvent(eventData);
+      setPurchase(purchaseData);
+
+      if (!purchaseData) {
+        setError(t('events.addons.success.notFound', 'We are still confirming this purchase.'));
+      } else {
+        setError(null);
+      }
+    } catch (err) {
+      setError(getApiErrorMessage(err, t('events.addons.success.loadFailed', 'Purchase result could not be loaded.')));
+    } finally {
+      setLoading(false);
+    }
+  }, [query.addonIntent, query.addonKey, query.checkoutId, slug, t]);
+
+  React.useEffect(() => {
+    void load();
+  }, [load]);
+
+  React.useEffect(() => {
+    if (!purchase || purchase.status !== 'completed' || confettiTriggeredRef.current) {
+      return;
+    }
+
+    confettiTriggeredRef.current = true;
+    void launchConfetti();
+  }, [purchase]);
+
+  const statusTone = purchase?.status === 'completed' ? 'success' : purchase?.status === 'pending' ? 'warning' : 'danger';
+  const statusText = purchase
+    ? t(`mobileBilling.status.${purchase.status}`, purchase.status)
+    : t('events.addons.success.statusUnknown', 'Unknown');
+
+  const StatusIcon = purchase?.status === 'completed' ? CheckCircle2 : purchase?.status === 'pending' ? Clock3 : AlertTriangle;
+  const statusColor = purchase?.status === 'completed' ? successText : purchase?.status === 'pending' ? warningText : danger;
+
+  if (loading) {
+    return (
+      <MobileShell title={t('events.addons.success.title', 'Add-on purchase')} activeTab="home" onBack={back}>
+        <YStack gap="$3">
+          <SkeletonCard height={130} />
+          <SkeletonCard height={210} />
+          <SkeletonCard height={170} />
+        </YStack>
+      </MobileShell>
+    );
+  }
+
+  return (
+    <MobileShell title={t('events.addons.success.title', 'Add-on purchase')} activeTab="home" onBack={back}>
+      <YStack gap="$3">
+        <MobileCard gap="$2" borderColor={statusColor}>
+          <XStack alignItems="center" gap="$2">
+            <StatusIcon size={18} color={statusColor} />
+            <Text fontSize="$lg" fontWeight="800" color={textStrong}>
+              {purchase?.status === 'completed'
+                ? t('events.addons.success.completedTitle', 'Purchase completed')
+                : purchase?.status === 'pending'
+                  ? t('events.addons.success.pendingTitle', 'Purchase in progress')
+                  : t('events.addons.success.failedTitle', 'Purchase failed')}
+            </Text>
+          </XStack>
+          <Text fontSize="$sm" color={text}>
+            {purchase?.status === 'completed'
+              ? t('events.addons.success.completedBody', 'Your event add-on is now active and limits update shortly.')
+              : purchase?.status === 'pending'
+                ? t('events.addons.success.pendingBody', 'We are still processing your payment confirmation.')
+                : t('events.addons.success.failedBody', 'The payment could not be completed. You can try again.')}
+          </Text>
+          <PillBadge tone={statusTone}>{statusText}</PillBadge>
+        </MobileCard>
+
+        <MobileCard gap="$2">
+          <Text fontSize="$sm" color={muted}>
+            {t('events.addons.event', 'Event')}
+          </Text>
+          <Text fontSize="$lg" fontWeight="800" color={textStrong}>
+            {resolveEventDisplayName(event)}
+          </Text>
+        </MobileCard>
+
+        <MobileCard gap="$2">
+          <XStack alignItems="center" gap="$2">
+            <ReceiptText size={16} color={primary} />
+            <Text fontSize="$md" fontWeight="800" color={textStrong}>
+              {t('events.addons.success.summaryTitle', 'Purchase summary')}
+            </Text>
+          </XStack>
+
+          {error ? (
+            <Text fontSize="$sm" color={danger}>
+              {error}
+            </Text>
+          ) : null}
+
+          {purchase ? (
+            <YStack gap="$1.5">
+              <SummaryRow label={t('events.addons.success.addonType', 'Add-on')} value={purchase.label ?? purchase.addon_key} />
+              <SummaryRow label={t('events.addons.success.amount', 'Amount')} value={formatAmount(purchase.amount, purchase.currency)} />
+              <SummaryRow label={t('events.addons.success.quantity', 'Quantity')} value={String(purchase.quantity)} />
+              <SummaryRow
+                label={t('events.addons.success.purchasedAt', 'Purchased at')}
+                value={formatDateTime(purchase.purchased_at ?? purchase.created_at)}
+              />
+              {purchase.checkout_id ? (
+                <SummaryRow label={t('events.addons.success.checkoutId', 'Checkout ID')} value={purchase.checkout_id} />
+              ) : null}
+              {purchase.transaction_id ? (
+                <SummaryRow label={t('events.addons.success.transactionId', 'Transaction ID')} value={purchase.transaction_id} />
+              ) : null}
+            </YStack>
+          ) : null}
+
+          {purchase ? (
+            <XStack gap="$2" flexWrap="wrap" marginTop="$1">
+              {purchase.extra_photos > 0 ? (
+                <PillBadge tone="muted">
+                  {t('mobileBilling.extra.photos', '+{{count}} photos', { count: purchase.extra_photos })}
+                </PillBadge>
+              ) : null}
+              {purchase.extra_guests > 0 ? (
+                <PillBadge tone="muted">
+                  {t('mobileBilling.extra.guests', '+{{count}} guests', { count: purchase.extra_guests })}
+                </PillBadge>
+              ) : null}
+              {purchase.extra_gallery_days > 0 ? (
+                <PillBadge tone="muted">
+                  {t('mobileBilling.extra.days', '+{{count}} days', { count: purchase.extra_gallery_days })}
+                </PillBadge>
+              ) : null}
+            </XStack>
+          ) : null}
+        </MobileCard>
+
+        <MobileCard gap="$2">
+          <XStack alignItems="center" gap="$2">
+            <Sparkles size={16} color={primary} />
+            <Text fontSize="$md" fontWeight="800" color={textStrong}>
+              {t('events.addons.success.nextTitle', 'What next?')}
+            </Text>
+          </XStack>
+
+          <YStack gap="$2">
+            <CTAButton
+              label={t('events.addons.success.backToAddons', 'Back to add-on manager')}
+              onPress={() => navigate(slug ? ADMIN_EVENT_ADDONS_PATH(slug) : adminPath('/mobile/events'))}
+            />
+            <CTAButton
+              label={t('events.addons.success.openControlRoom', 'Open control room')}
+              tone="ghost"
+              onPress={() => navigate(slug ? ADMIN_EVENT_CONTROL_ROOM_PATH(slug) : adminPath('/mobile/events'))}
+            />
+            <CTAButton
+              label={t('events.addons.success.openBilling', 'Open billing')}
+              tone="ghost"
+              onPress={() => navigate(ADMIN_BILLING_PATH)}
+            />
+            <CTAButton
+              label={t('events.addons.success.backToEvent', 'Back to event')}
+              tone="ghost"
+              onPress={() => navigate(slug ? ADMIN_EVENT_VIEW_PATH(slug) : adminPath('/mobile/events'))}
+            />
+          </YStack>
+        </MobileCard>
+      </YStack>
+    </MobileShell>
+  );
+}
+
+function SummaryRow({ label, value }: { label: string; value: string }) {
+  const { textStrong, muted, border } = useAdminTheme();
+
+  return (
+    <XStack alignItems="center" justifyContent="space-between" gap="$2" borderBottomWidth={1} borderColor={border} paddingBottom="$1.5">
+      <Text fontSize="$xs" color={muted}>
+        {label}
+      </Text>
+      <Text fontSize="$sm" color={textStrong} fontWeight="700" textAlign="right" flexShrink={1}>
+        {value}
+      </Text>
+    </XStack>
+  );
+}
diff --git a/resources/js/admin/mobile/EventAddonsPage.tsx b/resources/js/admin/mobile/EventAddonsPage.tsx
index dfaff7e9..de88c119 100644
--- a/resources/js/admin/mobile/EventAddonsPage.tsx
+++ b/resources/js/admin/mobile/EventAddonsPage.tsx
@@ -17,7 +17,7 @@ import {
 } from '../api';
 import { getApiErrorMessage } from '../lib/apiError';
 import { buildLimitWarnings } from '../lib/limitWarnings';
-import { adminPath, ADMIN_EVENT_VIEW_PATH } from '../constants';
+import { adminPath, ADMIN_EVENT_ADDON_SUCCESS_PATH, ADMIN_EVENT_VIEW_PATH } from '../constants';
 import { useBackNavigation } from './hooks/useBackNavigation';
 import { useAdminTheme } from './theme';
 import { MobileShell } from './components/MobileShell';
@@ -312,11 +312,13 @@ export default function MobileEventAddonsPage() {
 
     const pagePath = adminPath(`/mobile/events/${slug}/addons`);
     const currentUrl = `${window.location.origin}${pagePath}`;
+    const successPath = `${ADMIN_EVENT_ADDON_SUCCESS_PATH(slug)}?addon_key=${encodeURIComponent(pendingAddonKey)}`;
+    const successUrl = `${window.location.origin}${successPath}`;
 
     try {
       const checkout = await createEventAddonCheckout(slug, {
         addon_key: pendingAddonKey,
-        success_url: `${currentUrl}?addon_success=1`,
+        success_url: successUrl,
         cancel_url: currentUrl,
         accepted_terms: consents.acceptedTerms,
         accepted_waiver: consents.acceptedWaiver,
diff --git a/resources/js/admin/mobile/__tests__/EventAddonSuccessPage.test.tsx b/resources/js/admin/mobile/__tests__/EventAddonSuccessPage.test.tsx
new file mode 100644
index 00000000..acb0bd32
--- /dev/null
+++ b/resources/js/admin/mobile/__tests__/EventAddonSuccessPage.test.tsx
@@ -0,0 +1,170 @@
+import React from 'react';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { fireEvent, render, screen, waitFor } from '@testing-library/react';
+
+const navigateMock = vi.fn();
+
+const fixtures = vi.hoisted(() => ({
+  event: {
+    id: 77,
+    name: { de: 'Sommerfest', en: 'Summer Fest' },
+    slug: 'summer-fest',
+    status: 'published',
+    event_date: '2026-07-01T10:00:00Z',
+    settings: {},
+  },
+  purchase: {
+    id: 901,
+    addon_key: 'extra_photos_500',
+    label: 'Extra photos 500',
+    quantity: 1,
+    status: 'completed',
+    amount: 12,
+    currency: 'EUR',
+    extra_photos: 500,
+    extra_guests: 0,
+    extra_gallery_days: 0,
+    purchased_at: '2026-02-07T12:00:00Z',
+    receipt_url: null,
+    checkout_id: 'ORDER-123',
+    transaction_id: 'TX-999',
+    created_at: '2026-02-07T11:59:00Z',
+    addon_intent: 'intent_abc',
+    event: { id: 77, slug: 'summer-fest', name: { de: 'Sommerfest', en: 'Summer Fest' } },
+  },
+}));
+
+vi.mock('react-router-dom', () => ({
+  useNavigate: () => navigateMock,
+  useParams: () => ({ slug: fixtures.event.slug }),
+  useLocation: () => ({ pathname: '/event-admin/mobile/events/summer-fest/addons/success', search: '?addon_intent=intent_abc' }),
+}));
+
+vi.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (key: string, fallback?: string | Record<string, unknown>, options?: Record<string, unknown>) => {
+      let value = typeof fallback === 'string' ? fallback : key;
+      if (options) {
+        Object.entries(options).forEach(([optionKey, optionValue]) => {
+          value = value.replaceAll(`{{${optionKey}}}`, String(optionValue));
+        });
+      }
+      return value;
+    },
+  }),
+  initReactI18next: {
+    type: '3rdParty',
+    init: () => undefined,
+  },
+}));
+
+vi.mock('../hooks/useBackNavigation', () => ({
+  useBackNavigation: () => undefined,
+}));
+
+vi.mock('../../lib/apiError', () => ({
+  getApiErrorMessage: (_err: unknown, fallback: string) => fallback,
+}));
+
+vi.mock('../../lib/events', () => ({
+  resolveEventDisplayName: (event: any) => event?.name?.de ?? event?.name ?? 'Event',
+}));
+
+vi.mock('../theme', () => ({
+  useAdminTheme: () => ({
+    text: '#111827',
+    muted: '#6b7280',
+    subtle: '#94a3b8',
+    border: '#e5e7eb',
+    primary: '#2563eb',
+    successText: '#16a34a',
+    warningText: '#f59e0b',
+    danger: '#dc2626',
+    surface: '#ffffff',
+    surfaceMuted: '#f9fafb',
+    backdrop: '#111827',
+    accentSoft: '#eef2ff',
+    textStrong: '#0f172a',
+  }),
+}));
+
+vi.mock('../components/MobileShell', () => ({
+  MobileShell: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
+}));
+
+vi.mock('../components/Primitives', () => ({
+  MobileCard: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
+  CTAButton: ({ label, onPress }: { label: string; onPress?: () => void }) => (
+    <button type="button" onClick={onPress}>{label}</button>
+  ),
+  PillBadge: ({ children }: { children: React.ReactNode }) => <span>{children}</span>,
+  SkeletonCard: () => <div>Loading...</div>,
+}));
+
+vi.mock('@tamagui/stacks', () => ({
+  YStack: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
+  XStack: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
+}));
+
+vi.mock('@tamagui/text', () => ({
+  SizableText: ({ children }: { children: React.ReactNode }) => <span>{children}</span>,
+}));
+
+vi.mock('../../api', () => ({
+  getEvent: vi.fn().mockResolvedValue(fixtures.event),
+  getEventAddonPurchase: vi.fn().mockResolvedValue(fixtures.purchase),
+}));
+
+import MobileEventAddonSuccessPage from '../EventAddonSuccessPage';
+import { getEventAddonPurchase } from '../../api';
+
+describe('MobileEventAddonSuccessPage', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+
+    Object.defineProperty(window, 'matchMedia', {
+      writable: true,
+      value: vi.fn().mockReturnValue({
+        matches: true,
+        media: '(prefers-reduced-motion: reduce)',
+        onchange: null,
+        addListener: vi.fn(),
+        removeListener: vi.fn(),
+        addEventListener: vi.fn(),
+        removeEventListener: vi.fn(),
+        dispatchEvent: vi.fn(),
+      }),
+    });
+  });
+
+  it('loads purchase by addon intent and renders summary details', async () => {
+    const purchaseMock = vi.mocked(getEventAddonPurchase);
+
+    render(<MobileEventAddonSuccessPage />);
+
+    await waitFor(() => {
+      expect(purchaseMock).toHaveBeenCalledWith(fixtures.event.slug, {
+        addonIntent: 'intent_abc',
+        checkoutId: undefined,
+        addonKey: undefined,
+      });
+    });
+
+    expect(await screen.findByText('Purchase summary')).toBeInTheDocument();
+    expect(screen.getByText('Sommerfest')).toBeInTheDocument();
+    expect(screen.getByText('Extra photos 500')).toBeInTheDocument();
+    expect(screen.getByText('ORDER-123')).toBeInTheDocument();
+    expect(screen.getByText('TX-999')).toBeInTheDocument();
+  });
+
+  it('shows fallback error state when purchase is not found', async () => {
+    vi.mocked(getEventAddonPurchase).mockResolvedValue(null as any);
+
+    render(<MobileEventAddonSuccessPage />);
+
+    expect(await screen.findByText('We are still confirming this purchase.')).toBeInTheDocument();
+
+    fireEvent.click(screen.getByRole('button', { name: 'Open billing' }));
+    expect(navigateMock).toHaveBeenCalledWith('/event-admin/mobile/billing');
+  });
+});
diff --git a/resources/js/admin/mobile/__tests__/EventAddonsPage.test.tsx b/resources/js/admin/mobile/__tests__/EventAddonsPage.test.tsx
index c8ced1ab..4b5db067 100644
--- a/resources/js/admin/mobile/__tests__/EventAddonsPage.test.tsx
+++ b/resources/js/admin/mobile/__tests__/EventAddonsPage.test.tsx
@@ -186,7 +186,7 @@ describe('MobileEventAddonsPage', () => {
     await waitFor(() => {
       expect(checkoutMock).toHaveBeenCalledWith(fixtures.event.slug, {
         addon_key: 'extra_photos_500',
-        success_url: `${window.location.origin}/event-admin/mobile/events/demo-event/addons?addon_success=1`,
+        success_url: `${window.location.origin}/event-admin/mobile/events/demo-event/addons/success?addon_key=extra_photos_500`,
         cancel_url: `${window.location.origin}/event-admin/mobile/events/demo-event/addons`,
         accepted_terms: true,
         accepted_waiver: true,
diff --git a/resources/js/admin/router.tsx b/resources/js/admin/router.tsx
index f9179e72..114613d9 100644
--- a/resources/js/admin/router.tsx
+++ b/resources/js/admin/router.tsx
@@ -32,6 +32,7 @@ const MobileEventMembersPage = React.lazy(() => import('./mobile/EventMembersPag
 const MobileEventTasksPage = React.lazy(() => import('./mobile/EventTasksPage'));
 const MobileEventRecapPage = React.lazy(() => import('./mobile/EventRecapPage'));
 const MobileEventAddonsPage = React.lazy(() => import('./mobile/EventAddonsPage'));
+const MobileEventAddonSuccessPage = React.lazy(() => import('./mobile/EventAddonSuccessPage'));
 const MobileEventAnalyticsPage = React.lazy(() => import('./mobile/EventAnalyticsPage'));
 const MobileNotificationsPage = React.lazy(() => import('./mobile/NotificationsPage'));
 const MobileProfilePage = React.lazy(() => import('./mobile/ProfilePage'));
@@ -201,6 +202,7 @@ export const router = createBrowserRouter([
           { path: 'events/:slug/members', element: <RedirectToMobileEvent buildPath={(slug) => `${ADMIN_EVENTS_PATH}/${slug}/members`} /> },
           { path: 'events/:slug/tasks', element: <RedirectToMobileEvent buildPath={(slug) => `${ADMIN_EVENTS_PATH}/${slug}/tasks`} /> },
           { path: 'events/:slug/addons', element: <RedirectToMobileEvent buildPath={(slug) => `${ADMIN_EVENTS_PATH}/${slug}/addons`} /> },
+          { path: 'events/:slug/addons/success', element: <RedirectToMobileEvent buildPath={(slug) => `${ADMIN_EVENTS_PATH}/${slug}/addons/success`} /> },
           { path: 'events/:slug/invites', element: <RedirectToMobileEvent buildPath={(slug) => `${ADMIN_EVENTS_PATH}/${slug}/qr`} /> },
           { path: 'events/:slug/branding', element: <RedirectToMobileEvent buildPath={(slug) => `${ADMIN_EVENTS_PATH}/${slug}/branding`} /> },
           { path: 'events/:slug/photobooth', element: <RedirectToMobileEvent buildPath={(slug) => `${ADMIN_EVENTS_PATH}/${slug}/photobooth`} /> },
@@ -219,6 +221,7 @@ export const router = createBrowserRouter([
           { path: 'mobile/events/:slug/live-show/settings', element: <RequireAdminAccess><MobileEventLiveShowSettingsPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/recap', element: <RequireAdminAccess><MobileEventRecapPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/addons', element: <RequireAdminAccess><MobileEventAddonsPage /></RequireAdminAccess> },
+          { path: 'mobile/events/:slug/addons/success', element: <RequireAdminAccess><MobileEventAddonSuccessPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/analytics', element: <RequireAdminAccess><MobileEventAnalyticsPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/members', element: <RequireAdminAccess><MobileEventMembersPage /></RequireAdminAccess> },
           { path: 'mobile/events/:slug/tasks', element: <MobileEventTasksPage /> },
diff --git a/routes/api.php b/routes/api.php
index 695dd55b..f8384906 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -302,6 +302,7 @@ Route::prefix('v1')->name('api.v1.')->group(function () {
                 Route::get('guest-notifications', [EventGuestNotificationController::class, 'index'])->name('tenant.events.guest-notifications.index');
                 Route::post('guest-notifications', [EventGuestNotificationController::class, 'store'])->name('tenant.events.guest-notifications.store');
                 Route::post('addons/checkout', [EventAddonController::class, 'checkout'])->name('tenant.events.addons.checkout');
+                Route::get('addons/purchase', [EventAddonController::class, 'purchase'])->name('tenant.events.addons.purchase');
 
                 Route::prefix('live-show')->group(function () {
                     Route::get('link', [LiveShowLinkController::class, 'show'])->name('tenant.events.live-show.link');
diff --git a/tests/Feature/Tenant/EventAddonCheckoutTest.php b/tests/Feature/Tenant/EventAddonCheckoutTest.php
index b24d4821..08000090 100644
--- a/tests/Feature/Tenant/EventAddonCheckoutTest.php
+++ b/tests/Feature/Tenant/EventAddonCheckoutTest.php
@@ -67,6 +67,8 @@ class EventAddonCheckoutTest extends TenantTestCase
         $response = $this->authenticatedRequest('POST', "/api/v1/tenant/events/{$event->slug}/addons/checkout", [
             'addon_key' => 'extra_photos_small',
             'quantity' => 2,
+            'success_url' => 'https://app.fotospiel.test/event-admin/mobile/events/test-event/addons/success?addon_key=extra_photos_small',
+            'cancel_url' => 'https://app.fotospiel.test/event-admin/mobile/events/test-event/addons',
             'accepted_terms' => true,
             'accepted_waiver' => true,
         ]);
@@ -87,6 +89,9 @@ class EventAddonCheckoutTest extends TenantTestCase
         $this->assertSame('Extra photos (500)', $addon->metadata['label'] ?? null);
         $this->assertSame(500, $addon->metadata['increments']['extra_photos'] ?? null);
         $this->assertNull($addon->metadata['price_eur'] ?? null);
+        $this->assertNotEmpty($addon->metadata['addon_intent'] ?? null);
+        $this->assertStringContainsString('addon_intent=', (string) ($addon->metadata['success_url'] ?? ''));
+        $this->assertStringContainsString('addon_intent=', (string) ($addon->metadata['cancel_url'] ?? ''));
     }
 
     public function test_paypal_checkout_creates_pending_addon_record(): void
@@ -132,6 +137,8 @@ class EventAddonCheckoutTest extends TenantTestCase
         $response = $this->authenticatedRequest('POST', "/api/v1/tenant/events/{$event->slug}/addons/checkout", [
             'addon_key' => 'extra_photos_small',
             'quantity' => 2,
+            'success_url' => 'https://app.fotospiel.test/event-admin/mobile/events/test-event/addons/success?addon_key=extra_photos_small',
+            'cancel_url' => 'https://app.fotospiel.test/event-admin/mobile/events/test-event/addons',
             'accepted_terms' => true,
             'accepted_waiver' => true,
         ]);
@@ -154,6 +161,9 @@ class EventAddonCheckoutTest extends TenantTestCase
         $this->assertSame(1000, $addon->extra_photos);
         $this->assertSame('Extra photos (500)', $addon->metadata['label'] ?? null);
         $this->assertSame(12.5, $addon->metadata['price_eur'] ?? null);
+        $this->assertNotEmpty($addon->metadata['addon_intent'] ?? null);
+        $this->assertStringContainsString('addon_intent=', (string) ($addon->metadata['paypal_success_url'] ?? ''));
+        $this->assertStringContainsString('addon_intent=', (string) ($addon->metadata['paypal_cancel_url'] ?? ''));
     }
 
     public function test_ai_styling_checkout_persists_feature_entitlement_metadata(): void
diff --git a/tests/Feature/Tenant/EventAddonPurchaseLookupTest.php b/tests/Feature/Tenant/EventAddonPurchaseLookupTest.php
new file mode 100644
index 00000000..486a9bf6
--- /dev/null
+++ b/tests/Feature/Tenant/EventAddonPurchaseLookupTest.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace Tests\Feature\Tenant;
+
+use App\Models\Event;
+use App\Models\EventPackage;
+use App\Models\EventPackageAddon;
+use App\Models\Package;
+use App\Models\Tenant;
+
+class EventAddonPurchaseLookupTest extends TenantTestCase
+{
+    public function test_tenant_can_load_event_addon_purchase_by_intent(): void
+    {
+        $package = Package::factory()->endcustomer()->create([
+            'max_photos' => 100,
+            'max_guests' => 50,
+            'gallery_days' => 7,
+        ]);
+
+        $event = Event::factory()->for($this->tenant)->create([
+            'slug' => 'summer-party',
+            'name' => ['de' => 'Sommerparty', 'en' => 'Summer Party'],
+        ]);
+
+        $eventPackage = EventPackage::create([
+            'event_id' => $event->id,
+            'package_id' => $package->id,
+            'purchased_price' => $package->price,
+            'purchased_at' => now()->subDay(),
+            'used_photos' => 0,
+            'used_guests' => 0,
+            'gallery_expires_at' => now()->addDays(7),
+        ]);
+
+        $addon = EventPackageAddon::create([
+            'event_package_id' => $eventPackage->id,
+            'event_id' => $event->id,
+            'tenant_id' => $this->tenant->id,
+            'addon_key' => 'extra_photos_500',
+            'quantity' => 1,
+            'extra_photos' => 500,
+            'extra_guests' => 0,
+            'extra_gallery_days' => 0,
+            'checkout_id' => 'ORDER-ADDON-123',
+            'transaction_id' => 'TX-ABC',
+            'status' => 'completed',
+            'amount' => 12.00,
+            'currency' => 'EUR',
+            'metadata' => [
+                'label' => 'Extra photos 500',
+                'addon_intent' => 'intent_123',
+            ],
+            'purchased_at' => now(),
+            'receipt_payload' => ['receipt_url' => 'https://receipt.test/addon'],
+        ]);
+
+        $response = $this->authenticatedRequest('GET', "/api/v1/tenant/events/{$event->slug}/addons/purchase?addon_intent=intent_123");
+
+        $response->assertOk();
+        $response->assertJsonPath('data.id', $addon->id);
+        $response->assertJsonPath('data.addon_key', 'extra_photos_500');
+        $response->assertJsonPath('data.label', 'Extra photos 500');
+        $response->assertJsonPath('data.checkout_id', 'ORDER-ADDON-123');
+        $response->assertJsonPath('data.transaction_id', 'TX-ABC');
+        $response->assertJsonPath('data.status', 'completed');
+        $response->assertJsonPath('data.amount', 12);
+        $response->assertJsonPath('data.currency', 'EUR');
+        $response->assertJsonPath('data.extra_photos', 500);
+        $response->assertJsonPath('data.receipt_url', 'https://receipt.test/addon');
+        $response->assertJsonPath('data.addon_intent', 'intent_123');
+        $response->assertJsonPath('data.event.slug', 'summer-party');
+    }
+
+    public function test_tenant_cannot_load_purchase_for_event_of_other_tenant(): void
+    {
+        $otherTenant = Tenant::factory()->create();
+        $otherEvent = Event::factory()->for($otherTenant)->create([
+            'slug' => 'foreign-event',
+        ]);
+
+        $response = $this->authenticatedRequest('GET', "/api/v1/tenant/events/{$otherEvent->slug}/addons/purchase?addon_key=extra_photos_500");
+
+        $response->assertStatus(404);
+        $response->assertJsonPath('error.code', 'event_not_found');
+    }
+}