# 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

# SDK Setup

Set up your app to handle Web Checkout purchases, deep links, and post-checkout redirecting.

## Prerequisites

Before integrating Web Checkout in your app, make sure you've completed the dashboard setup:

1. [Created a Web Checkout app](/docs/web-checkout/web-checkout-creating-an-app) in your Superwall project
2. [Connected and configured Stripe](/docs/web-checkout/web-checkout-configuring-stripe-keys-and-settings) with your app settings and post-purchase behavior
3. [Added Stripe products](/docs/web-checkout/web-checkout-adding-a-stripe-product) and attached them to a paywall
4. [Created a campaign](/docs/web-checkout/web-checkout-creating-campaigns-to-show-paywalls) with placements to show your paywalls

You'll also need the Superwall SDK integrated in your app.

## Implementation steps

1. **[Set up deep links](/docs/sdk/quickstart/in-app-paywall-previews)** — Required for redirecting users back to your app after a web purchase.
2. **[Handle Post-Checkout redirecting](/docs/sdk/guides/web-checkout/post-checkout-redirecting)** — Implement delegate methods to handle purchase redemption when the user returns to your app.
3. **Only if you're using RevenueCat:** [Using RevenueCat](/docs/sdk/guides/web-checkout/using-revenuecat) — Sync Stripe subscriptions with RevenueCat.
4. **Only if you're using your own PurchaseController:** [Redeeming In-App](/docs/sdk/guides/web-checkout/linking-membership-to-iOS-app) — Merge web and device entitlements when using a custom PurchaseController.

## Testing

1. **[Testing purchases](/docs/web-checkout/web-checkout-testing-purchases)** — Verify your integration with test mode before going live.
2. **[Managing purchases](/docs/web-checkout/web-checkout-managing-memberships)** — Learn how users restore purchases, manage subscriptions, update payment methods and view billing history.

## Further reading

* [Web Checkout FAQ](/docs/web-checkout/web-checkout-faq)
* [App to Web Checkout](/docs/web-checkout/web-checkout-direct-stripe-checkout) — Link U.S. storefront customers from iOS paywalls to Stripe checkout in Safari