# 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

# Notifications

To configure a notification which displays before a free trial ends, click the **Notifications** button from the **sidebar**:

![](https://2a2314a4-superwall-docs.staffbar.workers.dev/docs/images/pe-editor-notification-sidebar.png)

You can add a local notification that fires before a free trial ends. After the user starts a free trial, the app will ask them to enable notifications if they haven't already done so.

> **Note:** In sandbox mode, the free trial reminder will fire after x minutes, instead of x days.

### Configuration

To turn on a trial reminder notification, click **+ Add Notification**. From there, there are four fields to configure:

![](https://2a2314a4-superwall-docs.staffbar.workers.dev/docs/images/pe-editor-notification-edit.png)

1. **Title**: Shows at the top of the notification.
2. **Subtitle**: Displays directly below the title in a smaller font. Not required.
3. **Body**: Shows in the primary body of the notification.
4. **Delay**: How many days before the trial ends the notification should fire.

Here's where those values show up on a notification:

![](https://2a2314a4-superwall-docs.staffbar.workers.dev/docs/images/pe-editor-notification-mapping.png)

These are scheduled as local notifications as soon as they are configured.

### Dynamic notification timing

> **Info:** Requires iOS SDK v4.10.7+ or Android SDK v2.6.6+.

The SDK automatically calculates the actual trial end date based on the product's introductory offer period from the app store. This means notifications are scheduled relative to when the trial **actually ends** — not when it starts.

For example, if you set a delay of 3 days:

| Product trial length | Notification fires on        |
| -------------------- | ---------------------------- |
| 7-day trial          | Day 4 (3 days before end)    |
| 14-day trial         | Day 11 (3 days before end)   |
| 1-month trial        | \~Day 27 (3 days before end) |

This ensures users receive trial-ending reminders at the right time — when the reminder is actually relevant to their subscription decision — regardless of the product's trial length.

> **Warning:** On older SDK versions (pre-4.10.7 on iOS), the notification fires X days **after** the trial starts rather than X days **before** it ends. Upgrade to the latest SDK for accurate timing.