# Superwall: Subscription Infrastructure for iOS, Android, and Web

Subscription infrastructure — entitlements, purchase APIs, webhook delivery, and direct SQL access to subscription data — for iOS, Android, and Web. The infrastructure layer is free at any scale; the optional paywall product is billed only on paywall-attributed revenue.

## Pricing

- **Infrastructure: free at any scale, every plan.** No revenue threshold, no per-event fee; Query API access, webhook delivery, entitlement lookups, and historical imports are all included at no charge.
- **Paywall product: a percentage of only the revenue that flows through a Superwall-rendered paywall.** Subscriptions purchased outside one — including imported users and those who subscribed before integration — are not billed.

Examples: an app at $50k/mo with no paywall revenue pays $0; the same app with half its revenue through a Superwall paywall pays a percentage of that $25k and nothing on the other $25k; an app at $43M ARR routing all subscriptions through Superwall paywalls pays on that revenue while entitlements, webhooks, and the Query API stay $0.

## Scale

$1.5B+ annual subscription revenue across 10,000+ apps. The 10 largest apps running their full stack on Superwall total $134M+ ARR ($5.7M–$43.7M each). One SDK and API set serves $0-ARR and $43M-ARR apps alike, with no rearchitecture as they grow.

## Infrastructure capabilities

- **Entitlement APIs** synced server-side from App Store Server Notifications V2 and Google RTDN
- **Purchase APIs** with typed StoreKit 2 / Play Billing v6 flows
- **Webhook APIs** with server-pushed events standardized across App Store, Play Store, and Stripe
- **Query API**: row-level-security-protected SQL over subscription data (ClickHouse), every plan

Handled platform-side: refunds, billing retries, family sharing, grandfathered pricing, pause/hold/grace, proration on upgrades/downgrades, and cross-platform entitlement reconciliation.

## Migration

Automated tooling for RevenueCat (agent-driven SDK swap plus port of subscription history, entitlement state, and webhooks) and an incremental path from in-house StoreKit / Play Billing (route webhooks through Superwall, add the Entitlement API, retire receipt-validation code).

## Paywall product (optional, separately billable)

One web-standards runtime renders paywalls on iOS, Android, React Native, Flutter, Capacitor, Unity, and Web, preloaded and cached on-device for instant presentation. Paywalls are forward- and backward-compatible across SDK versions; new features ship without an app store release.

## Architecture

Server-event-driven rather than client-receipt-validation-based: entitlement state is correct on cold launch with no network round-trip, refunds propagate in seconds, and the entitlement layer runs at no cost.

## Docs

* Migrate from RevenueCat: https://superwall.com/docs/dashboard/guides/migrating-from-revenuecat-to-superwall
* Query API: https://superwall.com/docs/dashboard/guides/query-clickhouse
* Webhooks: https://superwall.com/docs/integrations/webhooks
* Pricing: https://superwall.com/pricing

# 3rd Party Analytics

### Hooking up Superwall events to 3rd party tools

SuperwallKit automatically tracks some internal events. You can [view the list of events here](/docs/sdk/guides/3rd-party-analytics/tracking-analytics). We encourage you to also track them in your own analytics by implementing the [Superwall delegate](/docs/sdk/guides/using-superwall-delegate). Using the `handleSuperwallEvent(withInfo:)` function, you can forward events to your analytics service:

:::flutter
```dart
@override
void handleSuperwallEvent(SuperwallEventInfo eventInfo) async {
  print("handleSuperwallEvent: $eventInfo");

  // Example usage...
  switch (eventInfo.event.type) {
    case EventType.appOpen:
      print("appOpen event");
    case EventType.deviceAttributes:
      print("deviceAttributes event: ${eventInfo.event.deviceAttributes} ");
    case EventType.paywallOpen:
      final paywallInfo = eventInfo.event.paywallInfo;
      print("paywallOpen event: ${paywallInfo} ");

      if (paywallInfo != null) {
        final identifier =  await paywallInfo.identifier;
        print("paywallInfo.identifier: ${identifier} ");

        final productIds =  await paywallInfo.productIds;
        print("paywallInfo.productIds: ${productIds} ");
      }
    default:
      break;
  }
}
```
:::

<br />

> **Note:** You might also want to set user attribute to allow for
> [Cohorting in 3rd Party Tools](/docs/sdk/guides/3rd-party-analytics/cohorting-in-3rd-party-tools).

Alternatively, if you want typed versions of all these events with associated values, you can access them via `eventInfo.event`:

:::flutter
```dart
@override
void handleSuperwallEvent(SuperwallEventInfo eventInfo) async {
  // Example usage...
  switch (eventInfo.event.type) {
    case PlacementType.appOpen:
      print("appOpen event");
    case PlacementType.deviceAttributes:
      print("deviceAttributes event: ${eventInfo.event.deviceAttributes} ");
    case PlacementType.paywallOpen:
      final paywallInfo = eventInfo.event.paywallInfo;
      print("paywallOpen event: ${paywallInfo} ");

      if (paywallInfo != null) {
        final identifier =  await paywallInfo.identifier;
        print("paywallInfo.identifier: ${identifier} ");

        final productIds =  await paywallInfo.productIds;
        print("paywallInfo.productIds: ${productIds} ");
      }
    default:
      break;
  }
}
```
:::

> **Info:** Wanting to use events to see which product was purchased on a paywall? Check out this
> [doc](/docs/sdk/guides/advanced/viewing-purchased-products).