# 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

# PurchaseController

An abstract class that defines the contract for a purchase controller.

> **Warning:** **Deprecated SDK**We strongly recommend migrating to the new [Superwall Expo SDK](/docs/expo), see our [migration guide](/docs/expo/guides/migrating-react-native) for details.

## Purpose

Abstract class that defines the contract for a purchase controller. This is used for custom purchase handling when you want to manage all subscription-related logic yourself.

## Signature

```typescript
export abstract class PurchaseController {
  abstract purchaseFromAppStore(productId: string): Promise<PurchaseResult>
  abstract purchaseFromGooglePlay(
    productId: string,
    basePlanId?: string,
    offerId?: string
  ): Promise<PurchaseResult>
  abstract restorePurchases(): Promise<RestorationResult>
}
```

## Methods

<TypeTable
  type="{
  purchaseFromAppStore: {
    type: &#x22;productId: string&#x22;,
    description: &#x22;Purchase a product from the App Store. Returns a Promise that resolves with the result of the purchase logic.&#x22;,
    required: true,
  },
  purchaseFromGooglePlay: {
    type: &#x22;productId: string, basePlanId?: string, offerId?: string&#x22;,
    description: &#x22;Purchase a product from Google Play. Returns a Promise that resolves with the result of the purchase logic.&#x22;,
    required: true,
  },
  restorePurchases: {
    type: &#x22;None&#x22;,
    description: &#x22;Restore purchases. Returns a Promise that resolves with the restoration result.&#x22;,
    required: true,
  },
}"
/>

## Usage

Implement the `PurchaseController` class:

```typescript
import { PurchaseController, PurchaseResult, RestorationResult, PurchaseResultCancelled, PurchaseResultFailed, PurchaseResultPurchased } from "@superwall/react-native-superwall"

class MyPurchaseController extends PurchaseController {
  async purchaseFromAppStore(productId: string): Promise<PurchaseResult> {
    try {
      // Your iOS purchase logic here
      // For example, using RevenueCat:
      const purchase = await Purchases.purchaseProduct(productId)
      
      if (purchase.customerInfo.entitlements.active["pro"]) {
        return new PurchaseResultPurchased()
      } else {
        return new PurchaseResultFailed("Purchase completed but entitlement not active")
      }
    } catch (error) {
      if (error.userCancelled) {
        return new PurchaseResultCancelled()
      }
      return new PurchaseResultFailed(error.message)
    }
  }
  
  async purchaseFromGooglePlay(
    productId: string,
    basePlanId?: string,
    offerId?: string
  ): Promise<PurchaseResult> {
    try {
      // Your Android purchase logic here
      // For example, using RevenueCat:
      const purchase = await Purchases.purchaseProduct(productId)
      
      if (purchase.customerInfo.entitlements.active["pro"]) {
        return new PurchaseResultPurchased()
      } else {
        return new PurchaseResultFailed("Purchase completed but entitlement not active")
      }
    } catch (error) {
      if (error.userCancelled) {
        return new PurchaseResultCancelled()
      }
      return new PurchaseResultFailed(error.message)
    }
  }
  
  async restorePurchases(): Promise<RestorationResult> {
    try {
      // Your restore logic here
      // For example, using RevenueCat:
      const customerInfo = await Purchases.restorePurchases()
      
      if (customerInfo.entitlements.active["pro"]) {
        return RestorationResult.restored()
      } else {
        return RestorationResult.failed("No active subscription found")
      }
    } catch (error) {
      return RestorationResult.failed(error.message)
    }
  }
}
```

Configure Superwall with your purchase controller:

```typescript
await Superwall.configure({
  apiKey: "pk_your_api_key",
  purchaseController: new MyPurchaseController()
})
```

## Important Notes

* When using a `PurchaseController`, you must call [`setSubscriptionStatus()`](/docs/react-native/sdk-reference/subscriptionStatus) whenever the user's entitlements change.
* The purchase controller is responsible for handling all purchase and restore logic.
* You can use third-party services like RevenueCat, Stripe, or your own backend to handle purchases.

## Related

* [`setSubscriptionStatus()`](/docs/react-native/sdk-reference/subscriptionStatus) - Update subscription status after purchases
* [`SuperwallDelegate.subscriptionStatusDidChange`](/docs/react-native/sdk-reference/SuperwallDelegate) - Receive subscription status change notifications