# 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 # Using the Superwall Delegate Use Superwall's delegate to extend our SDK's functionality across several surface areas by assigning to the `delegate` property: :::ios ## Tab ```swift Swift class SWDelegate: SuperwallDelegate { // Implement delegate methods here } // After configuring the SDK... Superwall.shared.delegate = SWDelegate() ``` ## Tab ```swift Objective-C // In its own file... #import @import SuperwallKit; @interface SWDelegate : NSObject @end @implementation SWDelegate // Implement delegate methods here @end // After configuring the SDK... [[Superwall sharedInstance] setDelegate:[SWDelegate new]]; ``` ::: Some common use cases for using the Superwall delegate include: * **Custom actions:** [Respond to custom tap actions from a paywall.](/docs/sdk/guides/advanced/custom-paywall-actions#custom-paywall-actions) * **Respond to purchases:** [See which product was purchased from the presented paywall.](/docs/sdk/guides/advanced/viewing-purchased-products) * **Analytics:** [Forward events from Superwall to your own analytics.](/docs/sdk/guides/3rd-party-analytics) Below are some commonly used implementations when using the delegate. ### Superwall Events Most of what occurs in Superwall can be viewed using the delegate method to respond to events: :::ios ## Tab ```swift Swift class SWDelegate: SuperwallDelegate { func handleSuperwallEvent(withInfo eventInfo: SuperwallEventInfo) { switch eventInfo.event { case .transactionComplete(let transaction, let product, let paywallInfo): print("Converted from paywall originalTransactionIdentifier: \(transaction?.originalTransactionIdentifier ?? "")") print("Converted from paywall storeTransactionId: \(transaction?.storeTransactionId ?? "")") print("Converted from paywall productIdentifier: \(product.productIdentifier)") print("Converted from paywall paywallInfo: \(paywallInfo.identifier)") case .transactionRestore(let restoreType, let paywallInfo): print("transactionRestore restoreType \(restoreType)") case let .customPlacement(name, params, paywallInfo): // Forward Mixpanel/Ampltiude/etc print("\(name) - \(params) - \(paywallInfo)") default: // And several more events to use... print("Default event: \(eventInfo.event.description)") } } } ``` ## Tab ```swift Objective-C // SWDelegate.h... #import @import SuperwallKit; NS_ASSUME_NONNULL_BEGIN @interface SWDelegate : NSObject @end NS_ASSUME_NONNULL_END // SWDelegate.m... @implementation SWDelegate - (void)handleSuperwallEventWithInfo:(SWKSuperwallEventInfo *)eventInfo { switch(eventInfo.event) { // Switch on any event type here... case SWKSuperwallEventTransactionComplete: NSLog(@"Transaction complete: %@", eventInfo.params[@"primary_product_id"]); } } ``` ::: ### Paywall Custom Actions Using the [custom tap action](/docs/sdk/guides/advanced/custom-paywall-actions#custom-paywall-actions), you can respond to any arbitrary event from a paywall: :::ios ## Tab ```swift Swift class SWDelegate: SuperwallDelegate { func handleCustomPaywallAction(withName name: String) { if name == "showHelpCenter" { DispatchQueue.main.asyncAfter(deadline: .now() + 0.33) { self.showHelpCenter.toggle() } } } } ``` ## Tab ```swift Objective-C // SWDelegate.h... #import @import SuperwallKit; NS_ASSUME_NONNULL_BEGIN @interface SWDelegate : NSObject @end NS_ASSUME_NONNULL_END // SWDelegate.m... #import "SWDelegate.h" @implementation SWDelegate - (void)handleCustomPaywallActionWithName:(NSString *)name { if ([name isEqualToString:@"showHelpCenter"]) { [self showHelpCenter]; } } @end ``` ::: ### Subscription status changes You can be informed of subscription status changes using the delegate. If you need to set or handle the status on your own, use a [purchase controller](/docs/sdk/guides/advanced-configuration) — this function is only for informational, tracking or similar purposes: :::ios ## Tab ```swift Swift class SWDelegate: SuperwallDelegate { func subscriptionStatusDidChange(from oldValue: SubscriptionStatus, to newValue: SubscriptionStatus) { // Log or handle subscription change in your Ui } } ``` ## Tab ```swift Objective-C // SWDelegate.h... #import @import SuperwallKit; NS_ASSUME_NONNULL_BEGIN @interface SWDelegate : NSObject @end NS_ASSUME_NONNULL_END // SWDelegate.m... @implementation SWDelegate - (void)subscriptionStatusDidChangeFrom:(enum SWKSubscriptionStatus)oldValue to:(enum SWKSubscriptionStatus)newValue { NSLog(@"Changed from %lu to %lu", (unsigned long)oldValue, (unsigned long)newValue); } @end ``` ::: ### Paywall events The delegate also has callbacks for several paywall events, such dismissing, presenting, and more. Here's an example: :::ios ## Tab ```swift Swift class SWDelegate: SuperwallDelegate { func didPresentPaywall(withInfo paywallInfo: PaywallInfo) { // paywallInfo will contain all of the presented paywall's info } } ``` ## Tab ```swift Objective-C // SWDelegate.h... #import @import SuperwallKit; NS_ASSUME_NONNULL_BEGIN @interface SWDelegate : NSObject @end NS_ASSUME_NONNULL_END // SWDelegate.m... @implementation SWDelegate - (void)didPresentPaywallWithInfo:(SWKPaywallInfo *)paywallInfo { NSLog(@"Presented paywall with info: %@", paywallInfo); } @end ``` :::