# 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

# Redeeming In-App

Handle a deep link in your app and use the delegate methods.

After purchasing from a web paywall, the user will be redirected to your app by a deep link to redeem their purchase on device.
Please follow our [Post-Checkout Redirecting](/docs/android/guides/web-checkout/post-checkout-redirecting) guide to handle this user experience.

> **Note:** If you're using Superwall to handle purchases, then you don't need to do anything here.

If you're using your own `PurchaseController`, you will need to update the subscription status with the redeemed web entitlements. If you're using RevenueCat, you should follow our [Using RevenueCat](/docs/android/guides/web-checkout/using-revenuecat) guide.

### Using a PurchaseController

If you're using Google Play Billing in your PurchaseController, you'll need to merge the web entitlements with the device entitlements before setting the subscription status.
Here's an example of how you might do this:

```kotlin
import com.android.billingclient.api.BillingClient
import com.android.billingclient.api.Purchase
import com.android.billingclient.api.QueryPurchasesParams
import com.superwall.sdk.Superwall
import com.superwall.sdk.models.entitlements.SubscriptionStatus
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext

suspend fun syncSubscriptionStatus(billingClient: BillingClient) {
  withContext(Dispatchers.IO) {
    val productIds = mutableSetOf<String>()

    // Get the device entitlements from Google Play Billing
    val params = QueryPurchasesParams.newBuilder()
      .setProductType(BillingClient.ProductType.SUBS)
      .build()
    
    val purchasesResult = billingClient.queryPurchasesAsync(params)
    
    // Collect purchased product IDs
    purchasesResult.purchasesList.forEach { purchase ->
      if (purchase.purchaseState == Purchase.PurchaseState.PURCHASED) {
        purchase.products.forEach { productId ->
          productIds.add(productId)
        }
      }
    }

    // Get products from Superwall and extract their entitlements
    val storeProducts = Superwall.instance.getProducts(productIds)
    val deviceEntitlements = storeProducts.flatMap { it.entitlements }.toSet()

    // Get the web entitlements from Superwall
    val webEntitlements = Superwall.instance.entitlements.web

    // Merge the two sets of entitlements
    val allEntitlements = deviceEntitlements + webEntitlements

    // Update subscription status on the main thread
    withContext(Dispatchers.Main) {
      if (allEntitlements.isNotEmpty()) {
        Superwall.instance.setSubscriptionStatus(
          SubscriptionStatus.Active(allEntitlements)
        )
      } else {
        Superwall.instance.setSubscriptionStatus(SubscriptionStatus.Inactive)
      }
    }
  }
}
```

In addition to syncing the subscription status when purchasing and restoring, you'll need to sync it whenever `didRedeemLink(result:)` is called:

```kotlin
import com.superwall.sdk.delegate.SuperwallDelegate
import com.superwall.sdk.models.redemption.RedemptionResult
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch

class SWDelegate(private val billingClient: BillingClient) : SuperwallDelegate {
  private val coroutineScope = CoroutineScope(Dispatchers.Main)
  
  override fun didRedeemLink(result: RedemptionResult) {
    coroutineScope.launch {
      syncSubscriptionStatus(billingClient)
    }
  }
}
```

### Refreshing of web entitlements

If you aren't using a Purchase Controller, the SDK will refresh the web entitlements every 24 hours.

### Redeeming while a paywall is open

If a redeem event occurs when a paywall is open, the SDK will track that as a restore event and the paywall will close.