# 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

# Migrating from React Native SDK

Guide to migrating from the legacy React Native SDK

This guide is for React Native projects that already have Superwall's legacy React Native SDK installed and want to migrate to the new Expo SDK.

> **Note:** **This doesn't sound like you?**- **Expo project** → Use the standard [installation guide](/docs/expo/quickstart/install)
> - **React Native app, new to Superwall** → See our [installation guide for bare React Native apps](/docs/expo/guides/using-expo-sdk-in-bare-react-native)

> **Warning:** **Important: Expo SDK 53+ Required**This SDK is exclusively compatible with Expo SDK version 53 and newer. For projects using older Expo versions, please use our [legacy React Native SDK](https://github.com/superwall/react-native-superwall).

This guide is to help you migrate your project using the legacy `react-native-superwall` SDK to the new Expo SDK. The `expo-superwall/compat` SDK is intended to make it easy for existing projects to migrate over.

## Installation

First, you need to install `expo-superwall` using your package manager of choice.

## Tab

```bash bun
bunx expo install expo-superwall
```

## Tab

```bash pnpm
pnpm dlx expo install expo-superwall
```

## Tab

```bash npm
npx expo install expo-superwall
```

## Tab

```bash yarn
yarn dlx expo install expo-superwall
```

## Basic Setup

Configure the SDK with your **Public API Key**. You'll retrieve this from the Superwall settings page, same as your existing React Native project.

```tsx
import Superwall from "expo-superwall/compat"
import { useEffect, useState } from "react"
import { Platform } from "react-native"

// Initialize Superwall
useEffect(()=> {
	const apiKey = Platform.OS === "ios"
        ? "yourSuperwall_iOSKey"
        : "yourSuperwall_androidKey";
	Superwall.configure({ // `await` is optional here if not chaining or needing immediate confirmation
		apiKey,
	});
})
```

## Identify User

```tsx
// Identify a user
await Superwall.shared.identify({ userId })

// Set User Attributes
await Superwall.shared.setUserAttributes({
        someCustomVal: "abc",
        platform: Platform.OS,
        timestamp: new Date().toISOString(),
})
```

## Present a Paywall

```tsx
// Present a paywall
Superwall.shared.register({
      placement: "yourPlacementName",
      feature() {
        console.log(`Feature called!`)
      },
})
```

## Listen to Events

```tsx
// 1. Define your Superwall Delegate
import {
  EventType,
  type PaywallInfo,
  type RedemptionResult,
  type SubscriptionStatus,
  SuperwallDelegate,
  type SuperwallEventInfo,
} from "expo-superwall/compat"

export class MyDelegate extends SuperwallDelegate {
  handleSuperwallEvent(eventInfo) {
    switch (eventInfo.event.type) {
      case EventType.paywallOpen:
        console.log("Paywall opened");
        break;
      case EventType.paywallClose:
        console.log("Paywall closed");
        break;
    }
  }
}

// 2. Simply set the delegate
const delegate = new MyDelegate()
await Superwall.shared.setDelegate(delegate)

```