# 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 # SuperwallDelegate A class that handles Superwall lifecycle events and analytics. > **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. > **Note:** Set the delegate using `Superwall.shared.setDelegate(delegate)` to receive these callbacks. > **Tip:** Use `handleSuperwallEvent(eventInfo)` to track Superwall analytics events in your own analytics platform for a complete view of user behavior. > **Warning:** `SuperwallDelegate` is an abstract class—all methods are required. Provide no-op implementations for callbacks you do not use. ## Purpose Provides callbacks for Superwall lifecycle events, analytics tracking, and custom paywall interactions. ## Signature ```typescript export abstract class SuperwallDelegate { abstract subscriptionStatusDidChange(from: SubscriptionStatus, to: SubscriptionStatus): void abstract willRedeemLink(): void abstract didRedeemLink(result: RedemptionResult): void abstract handleSuperwallEvent(eventInfo: SuperwallEventInfo): void abstract handleCustomPaywallAction(name: string): void abstract willDismissPaywall(paywallInfo: PaywallInfo): void abstract willPresentPaywall(paywallInfo: PaywallInfo): void abstract didDismissPaywall(paywallInfo: PaywallInfo): void abstract didPresentPaywall(paywallInfo: PaywallInfo): void abstract paywallWillOpenURL(url: URL): void abstract paywallWillOpenDeepLink(url: URL): void abstract handleLog( level: string, scope: string, message?: string, info?: Map, error?: string ): void } ``` ## Methods All methods must be implemented (you can provide empty bodies). Key methods include: ## Usage Basic delegate setup: ```typescript import { SuperwallDelegate, PaywallInfo, SubscriptionStatus } from "@superwall/react-native-superwall" class MyDelegate extends SuperwallDelegate { subscriptionStatusDidChange(from: SubscriptionStatus, to: SubscriptionStatus) { console.log(`Subscription changed from ${from.status} to ${to.status}`) // update UI here } handleSuperwallEvent(eventInfo: SuperwallEventInfo) { // Track in your analytics Analytics.track("superwall_event", { event: eventInfo.event.type, paywall_id: eventInfo.paywallInfo?.id }) } handleCustomPaywallAction(name: string) { switch (name) { case "help": this.presentHelpScreen() break case "contact": this.presentContactForm() break } } willPresentPaywall(paywallInfo: PaywallInfo) { // Pause video, hide UI, etc. this.pauseBackgroundTasks() } didDismissPaywall(paywallInfo: PaywallInfo) { // Resume video, show UI, etc. this.resumeBackgroundTasks() } // Required methods you might not use willRedeemLink() {} didRedeemLink() {} handleCustomPaywallAction() {} willPresentPaywall() {} didPresentPaywall() {} paywallWillOpenURL() {} paywallWillOpenDeepLink() {} handleLog() {} } // Set the delegate await Superwall.shared.setDelegate(new MyDelegate()) ``` Track subscription status changes: ```typescript subscriptionStatusDidChange(from: SubscriptionStatus, to: SubscriptionStatus) { console.log("Subscription changed from", from, "to", to) this.updateUI(for: to) } ``` Forward analytics events: ```typescript handleSuperwallEvent(eventInfo: SuperwallEventInfo) { switch (eventInfo.event.type) { case EventType.paywallOpen: Analytics.track("paywall_opened", { paywall_id: eventInfo.paywallInfo?.id, placement: eventInfo.placement }) break case EventType.transactionComplete: Analytics.track("subscription_purchased", { product_id: eventInfo.product?.id, paywall_id: eventInfo.paywallInfo?.id }) break } } ```