# 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 protocol that handles Superwall lifecycle events and analytics. > **Note:** Set the delegate using `Superwall.shared.delegate = self` to receive these callbacks. > **Tip:** Use `handleSuperwallEvent(withInfo:)` to track Superwall analytics events in your own analytics platform for a complete view of user behavior. ## Purpose Provides callbacks for Superwall lifecycle events, analytics tracking, and custom paywall interactions. ## Signature ```swift public protocol SuperwallDelegate: AnyObject { @MainActor func subscriptionStatusDidChange( from oldValue: SubscriptionStatus, to newValue: SubscriptionStatus ) @MainActor func handleSuperwallEvent(withInfo eventInfo: SuperwallEventInfo) @MainActor func handleCustomPaywallAction(withName name: String) @MainActor func willDismissPaywall(withInfo paywallInfo: PaywallInfo) @MainActor func willPresentPaywall(withInfo paywallInfo: PaywallInfo) @MainActor func didDismissPaywall(withInfo paywallInfo: PaywallInfo) @MainActor func didPresentPaywall(withInfo paywallInfo: PaywallInfo) @MainActor func paywallWillOpenURL(url: URL) @MainActor func paywallWillOpenDeepLink(url: URL) @MainActor func handleLog( level: LogLevel, scope: LogScope, message: String, info: [String: Any]?, error: Error? ) @MainActor func customerInfoDidChange( from oldValue: CustomerInfo, to newValue: CustomerInfo ) @MainActor func userAttributesDidChange(newAttributes: [String: Any]) } ``` ## Parameters All methods are optional to implement. Key methods include: ## Returns / State All delegate methods return `Void`. They provide information about Superwall events and state changes. ## Usage Basic delegate setup: ```swift class ViewController: UIViewController, SuperwallDelegate { override func viewDidLoad() { super.viewDidLoad() Superwall.shared.delegate = self } } ``` Track subscription status changes: ```swift func subscriptionStatusDidChange( from oldValue: SubscriptionStatus, to newValue: SubscriptionStatus ) { print("Subscription changed from \(oldValue) to \(newValue)") updateUI(for: newValue) } ``` Forward analytics events: ```swift func handleSuperwallEvent(withInfo eventInfo: SuperwallEventInfo) { switch eventInfo.event { case .paywallOpen(let info): Analytics.track("paywall_opened", properties: [ "paywall_id": info.id, "placement": info.placement ]) case .transactionComplete(let transaction, let product, _, let info): Analytics.track("subscription_purchased", properties: [ "product_id": product.id, "paywall_id": info.id ]) case .permissionGranted(let permission, let paywallId): Analytics.track("permission_granted", properties: [ "permission": permission, "paywall_id": paywallId ]) case .permissionDenied(let permission, let paywallId): Analytics.track("permission_denied", properties: [ "permission": permission, "paywall_id": paywallId ]) default: break } } ``` Handle custom paywall actions: ```swift func handleCustomPaywallAction(withName name: String) { switch name { case "help": presentHelpScreen() case "contact": presentContactForm() default: print("Unknown custom action: \(name)") } } ``` Handle paywall lifecycle: ```swift func willPresentPaywall(withInfo paywallInfo: PaywallInfo) { // Pause video, hide UI, etc. pauseBackgroundTasks() } func didDismissPaywall(withInfo paywallInfo: PaywallInfo) { // Resume video, show UI, etc. resumeBackgroundTasks() } ``` Handle customer info changes: ```swift func customerInfoDidChange( from oldValue: CustomerInfo, to newValue: CustomerInfo ) { // Check if user gained or lost subscriptions let oldSubscriptionCount = oldValue.subscriptions.count let newSubscriptionCount = newValue.subscriptions.count if newSubscriptionCount > oldSubscriptionCount { print("User gained a new subscription") } // Update purchase history UI updatePurchaseHistoryUI(with: newValue) } func userAttributesDidChange(newAttributes: [String: Any]) { // React to server-driven or paywall-triggered updates refreshProfileUI(with: newAttributes) } ```