# 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

# CustomerInfo

Contains the latest subscription and entitlement information about the customer.

## Purpose

Represents the complete customer information including all subscription transactions, non-subscription transactions, entitlements, and user identification.

## Signature

```dart
class CustomerInfo {
  final List<SubscriptionTransaction> subscriptions;
  final List<NonSubscriptionTransaction> nonSubscriptions;
  final List<Entitlement> entitlements;
  final String userId;
}
```

## Properties

<TypeTable
  type="{
  subscriptions: {
    type: &#x22;List<SubscriptionTransaction>&#x22;,
    description: &#x22;All subscription transactions the user has made.&#x22;,
    required: true,
  },
  nonSubscriptions: {
    type: &#x22;List<NonSubscriptionTransaction>&#x22;,
    description: &#x22;All non-subscription transactions (consumables and non-consumables) the user has made.&#x22;,
    required: true,
  },
  entitlements: {
    type: &#x22;List<Entitlement>&#x22;,
    description: &#x22;All entitlements available to the user.&#x22;,
    required: true,
  },
  userId: {
    type: &#x22;String&#x22;,
    description: &#x22;The ID of the user.&#x22;,
    required: true,
  },
}"
/>

## Usage

Getting customer info:

```dart
final customerInfo = await Superwall.shared.getCustomerInfo();

// Access user ID
print('User ID: ${customerInfo.userId}');

// Check entitlements
final activeEntitlements = customerInfo.entitlements
    .where((e) => e.isActive)
    .toList();

// Access subscriptions
for (final subscription in customerInfo.subscriptions) {
  if (subscription.isActive) {
    print('Active subscription: ${subscription.productId}');
  }
}
```

Checking for specific entitlements:

```dart
final customerInfo = await Superwall.shared.getCustomerInfo();

final hasPremium = customerInfo.entitlements.any(
  (entitlement) => 
    entitlement.id == 'premium' && 
    entitlement.isActive,
);

if (hasPremium) {
  // User has premium access
  showPremiumContent();
}
```

Filtering active subscriptions:

```dart
final customerInfo = await Superwall.shared.getCustomerInfo();

final activeSubscriptions = customerInfo.subscriptions
    .where((sub) => sub.isActive && !sub.isRevoked)
    .toList();

print('User has ${activeSubscriptions.length} active subscriptions');
```

## Related

* [`getCustomerInfo()`](/docs/flutter/sdk-reference/getCustomerInfo) - Method to retrieve customer info
* [`SubscriptionTransaction`](/docs/flutter/sdk-reference/SubscriptionTransaction) - Subscription transaction details
* [`NonSubscriptionTransaction`](/docs/flutter/sdk-reference/NonSubscriptionTransaction) - Non-subscription transaction details
* [`Entitlements`](/docs/flutter/sdk-reference/Entitlements) - Entitlement information