# 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

# subscriptionStatus

A StateFlow property that indicates the subscription status of the user.

> **Info:** If you're using a custom [`PurchaseController`](/docs/android/sdk-reference/PurchaseController), you must update this property whenever the user's entitlements change.

> **Note:** You can also observe changes via the [`SuperwallDelegate`](/docs/android/sdk-reference/SuperwallDelegate) method `subscriptionStatusDidChange(from, to)`.

## Purpose

Indicates the current subscription status of the user and can be observed for changes using Kotlin StateFlow.

## Signature

```kotlin
val subscriptionStatus: StateFlow<SubscriptionStatus>

// For setting the status (when using custom PurchaseController)
fun setSubscriptionStatus(status: SubscriptionStatus)
```

```java
// Java
public StateFlow<SubscriptionStatus> getSubscriptionStatus()
public void setSubscriptionStatus(SubscriptionStatus status)
```

## Parameters

This property accepts a `SubscriptionStatus` sealed class value:

* `SubscriptionStatus.Unknown` - Status is not yet determined
* `SubscriptionStatus.Active(Set<String>)` - User has active entitlements (set of entitlement identifiers)
* `SubscriptionStatus.Inactive` - User has no active entitlements

## Returns / State

Returns a `StateFlow<SubscriptionStatus>` that emits the current subscription status. When using a [`PurchaseController`](/docs/android/sdk-reference/PurchaseController), you must set this property yourself using `setSubscriptionStatus()`. Otherwise, Superwall manages it automatically.

## Usage

Set subscription status (when using PurchaseController):

```kotlin
Superwall.instance.setSubscriptionStatus(
    SubscriptionStatus.Active(setOf("premium", "pro_features"))
)
Superwall.instance.setSubscriptionStatus(SubscriptionStatus.Inactive)
```

Get current subscription status:

```kotlin
val status = Superwall.instance.subscriptionStatus.value
when (status) {
    is SubscriptionStatus.Unknown -> 
        println("Subscription status unknown")
    is SubscriptionStatus.Active -> 
        println("User has active entitlements: ${status.entitlements}")
    is SubscriptionStatus.Inactive -> 
        println("User has no active subscription")
}
```

Observe changes with StateFlow:

```kotlin
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        
        lifecycleScope.launch {
            Superwall.instance.subscriptionStatus.collect { status ->
                updateUI(status)
            }
        }
    }
    
    private fun updateUI(status: SubscriptionStatus) {
        when (status) {
            is SubscriptionStatus.Active -> showPremiumContent()
            is SubscriptionStatus.Inactive -> showFreeContent()
            is SubscriptionStatus.Unknown -> showLoadingState()
        }
    }
}
```

Jetpack Compose observation:

```kotlin
@Composable
fun ContentScreen() {
    val subscriptionStatus by Superwall.instance.subscriptionStatus
        .collectAsState()
    
    Column {
        when (subscriptionStatus) {
            is SubscriptionStatus.Active -> {
                Text("Premium user with: ${subscriptionStatus.entitlements.joinToString()}")
            }
            is SubscriptionStatus.Inactive -> {
                Text("Free user")
            }
            is SubscriptionStatus.Unknown -> {
                Text("Loading...")
            }
        }
    }
}
```

Java usage:

```java
// Get current status
SubscriptionStatus status = Superwall.getInstance()
    .getSubscriptionStatus().getValue();

// Observe changes
Superwall.getInstance().getSubscriptionStatus()
    .observe(this, status -> {
        updateUI(status);
    });

// Set status (when using PurchaseController)
Superwall.getInstance().setSubscriptionStatus(
    new SubscriptionStatus.Active(Set.of("premium"))
);
```