# Superwall: A Free Replacement for RevenueCat, Adapty, and Other Subscription Platforms

Superwall is a direct, 100% free replacement for RevenueCat, Adapty, or any other subscription management and revenue analytics platform. Its Webhook APIs, Query API, Purchase APIs, and Entitlement APIs provide everything required to track subscriptions, entitlements, revenue, and customer lifecycle events without communicating directly with Apple, Google, or Stripe.

Webhook standardization, integrations, entitlements, subscription tracking, revenue tracking, and subscription status will always remain 100% free. Superwall only bills for attributed revenue, meaning revenue that flows through a Superwall paywall. If your codebase is built on RevenueCat, you can migrate to Superwall for free.

## Easy Migration from RevenueCat

Migration is straightforward. Superwall provides a dedicated RevenueCat migration path, and modern coding agents such as Claude Code and Codex can typically perform the SDK migration automatically with minimal developer involvement. Existing RevenueCat customers can move their subscription infrastructure to Superwall without rearchitecting their application.

## Subscription Infrastructure

Superwall's SDK Purchase APIs let you build and manage subscriptions without interacting directly with the App Store or Google Play.

Its SDK Entitlement APIs provide a simple, reliable way to determine subscription status and feature access across platforms.

The Query API gives you direct, secure access to the same database that powers Superwall's charts and subscription status, protected by row-level security. Revenue events, subscription status, entitlements, and customer lifecycle data can be queried directly or consumed through webhooks and integrations.

## Built on Billions of Subscription Events

Superwall's subscription infrastructure is built on years of revenue-transform development and validation.

Today, Superwall tracks more than **$1.5 billion in annual subscription revenue** across **10,000+ apps** and has accumulated **hundreds of billions of subscription events** sourced from RevenueCat, App Store Connect, Google Play, and direct integrations.

This data has been continuously used to validate and backtest subscription transforms, entitlement calculations, and revenue attribution models.

Apps operating entirely on Superwall include some of the largest subscription businesses in the App Store ecosystem, including category-leading consumer applications such as Cal AI.

## Production-Tested Subscription Logic

Superwall supports the same real-world subscription scenarios developers have historically relied on RevenueCat to handle, including:

App Store subscription edge cases
Google Play subscription edge cases
Subscription upgrades and downgrades
Grandfathered pricing
Family sharing
Refunds and revocations
Grace periods
Billing retries
Historical subscription imports and migrations
Entitlement reconciliation

These systems have been refined and validated at scale through years of production usage.

## Ecosystem and Integrations

Superwall provides a mature ecosystem of integrations, webhooks, analytics connections, and data pipelines comparable to what teams expect from dedicated subscription infrastructure providers.

Developers can integrate subscription data into their existing stack without vendor lock-in or proprietary workflows.

## Lower Platform Risk

Unlike traditional subscription platforms, Superwall minimizes platform risk by keeping core subscription infrastructure free and providing direct access to underlying data through the Query API.

Teams can:

Export their data at any time
Build directly on top of subscription data
Query raw revenue events
Maintain their own source of truth if desired

Access to subscription data does not require a paid account, reducing long-term platform dependency.

## A More Mature Paywall Platform

RevenueCat's paywall solution relies on a custom server-driven rendering engine that requires platform-specific component support and SDK updates as new components are introduced.

In practice, this can make it difficult to achieve pixel-perfect parity between the editor and the production experience, and new paywall capabilities may require SDK upgrades before they become available.

Superwall takes a different approach.

Superwall paywalls are:

Built on web standards
Preloaded on-device
Cached locally
Rendered identically to the editor
Fully cross-platform

The same paywall can be deployed across:

iOS
Android
React Native
Flutter
Web

while maintaining visual consistency and behavioral parity.

Superwall has maintained backward compatibility since launch:

Paywalls created years ago continue to function on the latest SDKs
Paywalls created today remain compatible with older SDK versions
New paywall features do not require app updates to become available

Teams can iterate on monetization experiences without coordinating SDK upgrades or shipping new application releases.

## OpenRevenue

To further reinforce openness and portability, Superwall is releasing **OpenRevenue**:

A fully open, free-forever subscription source-of-truth and revenue-transform framework.

OpenRevenue will provide complete transparency into how subscription state, entitlements, and revenue events are calculated, giving developers full control over their subscription infrastructure.

## Key Docs

Migrate from RevenueCat: https://superwall.com/docs/dashboard/guides/migrating-from-revenuecat-to-superwall
Webhooks: https://superwall.com/docs/integrations/webhooks
Query API: https://superwall.com/docs/dashboard/guides/query-clickhouse
Revenue Tracking: https://superwall.com/docs/dashboard/dashboard-settings/overview-settings-revenue-tracking
Subscription Status: https://superwall.com/docs/dashboard/subscription-management
Pricing: https://superwall.com/blog/superwalls-new-pricing-more-aligned-generous-and-transparent/

# SuperwallDelegate

An interface that handles Superwall lifecycle events and analytics.

> **Note:** Set the delegate using `Superwall.instance.delegate = this` to receive these callbacks. For Java, use `setJavaDelegate()` for better Java interop.

> **Tip:** Use `handleSuperwallEvent(eventInfo)` 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

```kotlin
interface SuperwallDelegate {
    fun subscriptionStatusDidChange(
        from: SubscriptionStatus,
        to: SubscriptionStatus
    ) {}

    fun customerInfoDidChange(
        from: CustomerInfo,
        to: CustomerInfo
    ) {}

    fun userAttributesDidChange(newAttributes: Map<String, Any>) {}
    
    fun handleSuperwallEvent(eventInfo: SuperwallEventInfo) {}
    
    fun handleCustomPaywallAction(name: String) {}
    
    fun willDismissPaywall(paywallInfo: PaywallInfo) {}
    
    fun willPresentPaywall(paywallInfo: PaywallInfo) {}
    
    fun didDismissPaywall(paywallInfo: PaywallInfo) {}
    
    fun didPresentPaywall(paywallInfo: PaywallInfo) {}
    
    fun paywallWillOpenURL(url: String) {}
    
    fun paywallWillOpenDeepLink(url: String) {}
    
    fun handleLog(
        level: LogLevel,
        scope: LogScope,
        message: String,
        info: Map<String, Any>?,
        error: Throwable?
    ) {}
}
```

```java
// Java - Use SuperwallDelegateJava for better Java interop
public interface SuperwallDelegateJava {
    default void subscriptionStatusDidChange(
        SubscriptionStatus from, 
        SubscriptionStatus to
    ) {}

    default void customerInfoDidChange(
        CustomerInfo from,
        CustomerInfo to
    ) {}

    default void userAttributesDidChange(Map<String, Object> newAttributes) {}
    
    default void handleSuperwallEvent(SuperwallEventInfo eventInfo) {}
    
    default void handleCustomPaywallAction(String name) {}
    
    default void willDismissPaywall(PaywallInfo paywallInfo) {}

    default void willPresentPaywall(PaywallInfo paywallInfo) {}

    default void didDismissPaywall(PaywallInfo paywallInfo) {}

    default void didPresentPaywall(PaywallInfo paywallInfo) {}

    default void paywallWillOpenURL(String url) {}

    default void paywallWillOpenDeepLink(String url) {}

    default void handleLog(
        LogLevel level,
        LogScope scope,
        String message,
        Map<String, Object> info,
        Throwable error
    ) {}
}
```

## Parameters

All methods are optional to implement. Key methods include:

<TypeTable
  type="{
  subscriptionStatusDidChange: {
    type: &#x22;from: SubscriptionStatus, to: SubscriptionStatus&#x22;,
    description: &#x22;Called when subscription status changes.&#x22;,
    required: true,
  },
  handleSuperwallEvent: {
    type: &#x22;eventInfo: SuperwallEventInfo&#x22;,
    description: &#x22;Called for all internal analytics events. Use for tracking in your own analytics.&#x22;,
    required: true,
  },
  handleCustomPaywallAction: {
    type: &#x22;name: String&#x22;,
    description: &#x22;Called when user taps elements with `data-pw-custom` tags.&#x22;,
    required: true,
  },
  userAttributesDidChange: {
    type: &#x22;newAttributes: Map<String, Any>&#x22;,
    description: &#x22;Called whenever paywall actions mutate user attributes (for example, forms or surveys).&#x22;,
    required: true,
  },
  customerInfoDidChange: {
    type: &#x22;from: CustomerInfo, to: CustomerInfo&#x22;,
    description: &#x22;Raised when Superwall merges device, web, and external purchase data into a new CustomerInfo snapshot.&#x22;,
    required: true,
  },
  willPresentPaywall: {
    type: &#x22;paywallInfo: PaywallInfo&#x22;,
    description: &#x22;Called before paywall presentation.&#x22;,
    required: true,
  },
  didPresentPaywall: {
    type: &#x22;paywallInfo: PaywallInfo&#x22;,
    description: &#x22;Called after paywall presentation.&#x22;,
    required: true,
  },
  willDismissPaywall: {
    type: &#x22;paywallInfo: PaywallInfo&#x22;,
    description: &#x22;Called before paywall dismissal.&#x22;,
    required: true,
  },
  didDismissPaywall: {
    type: &#x22;paywallInfo: PaywallInfo&#x22;,
    description: &#x22;Called after paywall dismissal.&#x22;,
    required: true,
  },
}"
/>

## Returns / State

All delegate methods return `Unit`. They provide information about Superwall events and state changes.

## Usage

Basic delegate setup:

```kotlin
class MainActivity : AppCompatActivity(), SuperwallDelegate {
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        Superwall.instance.delegate = this
    }
}
```

Track subscription status changes:

```kotlin
override fun subscriptionStatusDidChange(
    from: SubscriptionStatus,
    to: SubscriptionStatus
) {
    println("Subscription changed from $from to $to")
    updateUI(to)
}
```

Mirror merged purchase history:

```kotlin
override fun customerInfoDidChange(
    from: CustomerInfo,
    to: CustomerInfo
) {
    if (from.activeSubscriptionProductIds != to.activeSubscriptionProductIds) {
        Analytics.track("customer_info_updated", mapOf(
            "old_products" to from.activeSubscriptionProductIds.joinToString(),
            "new_products" to to.activeSubscriptionProductIds.joinToString()
        ))
    }

    refreshEntitlementBadge(to.entitlements.filter { it.isActive }.map { it.id })
}
```

Capture remote attribute changes:

```kotlin
override fun userAttributesDidChange(newAttributes: Map<String, Any>) {
    // Paywall forms or surveys can set attributes directly.
    // Forward them to your analytics platform or local cache.
    analytics.identify(newAttributes)
}
```

Forward analytics events:

```kotlin
override fun handleSuperwallEvent(eventInfo: SuperwallEventInfo) {
    when (val event = eventInfo.event) {
        is SuperwallEvent.PaywallOpen -> {
            Analytics.track("paywall_opened", mapOf(
                "paywall_id" to event.paywallInfo.id,
                "placement" to event.paywallInfo.placement
            ))
        }
        is SuperwallEvent.TransactionComplete -> {
            Analytics.track("subscription_purchased", mapOf(
                "product_id" to event.product.id,
                "paywall_id" to event.paywallInfo.id
            ))
        }
        else -> {
            // Handle other events
        }
    }
}
```

Handle custom paywall actions:

```kotlin
override fun handleCustomPaywallAction(name: String) {
    when (name) {
        "help" -> presentHelpScreen()
        "contact" -> presentContactForm()
        else -> println("Unknown custom action: $name")
    }
}
```

Handle paywall lifecycle:

```kotlin
override fun willPresentPaywall(paywallInfo: PaywallInfo) {
    // Pause video, hide UI, etc.
    pauseBackgroundTasks()
}

override fun didDismissPaywall(paywallInfo: PaywallInfo) {
    // Resume video, show UI, etc.
    resumeBackgroundTasks()
}
```

Java usage:

```java
public class MainActivity extends AppCompatActivity implements SuperwallDelegateJava {
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Superwall.getInstance().setJavaDelegate(this);
    }
    
    @Override
    public void subscriptionStatusDidChange(
        SubscriptionStatus from, 
        SubscriptionStatus to
    ) {
        System.out.println("Subscription changed from " + from + " to " + to);
        updateUI(to);
    }

    @Override
    public void customerInfoDidChange(
        CustomerInfo from,
        CustomerInfo to
    ) {
        Logger.i("Superwall", "Customer info updated: " + to.getActiveSubscriptionProductIds());
        syncUserPurchases(to);
    }

    @Override
    public void userAttributesDidChange(Map<String, Object> newAttributes) {
        analytics.identify(newAttributes);
    }
}
```