Subscription infrastructure engineers don't have to maintain

Subscriptions are where engineering time quietly disappears. Receipt validation, the App Store and Play Store edge cases, a purchase controller that has to stay correct on cold launch, webhook plumbing for every downstream tool — and then, on top of all of it, a steady queue of paywall tweaks from marketing that each turn into a code change and an app release. None of it ships features. All of it is on you.

Superwall splits that work in two. The subscription infrastructure — entitlements, purchase APIs, webhooks, and direct SQL access to your data — is something you wire up once and stop maintaining. The paywall layer sits on top and is fully remote, so the people asking for paywall changes can make them without touching your codebase. You get out of the critical path for monetization experiments while owning a subscription stack you can actually trust.

The subscription stack you'd rather not build again

Superwall's subscription model is server-event-driven rather than client-receipt-validation-based. Entitlement state is synchronized server-side from App Store Server Notifications V2 and Google Real-Time Developer Notifications, which is why it is correct on cold launch with no network round-trip and why refund propagation is measured in seconds instead of minutes. The edge cases that eat sprints — refunds, billing retries, family sharing, grandfathered pricing, pause and grace periods, upgrades and downgrades with proration, and cross-platform entitlement reconciliation — are handled platform-side.

What you integrate against:

• Entitlement APIs that tell you whether a user has access, kept in sync from the stores so you are not parsing receipts yourself.

• Purchase APIs with typed flows for StoreKit 2 and Play Billing v6, so you are not hand-rolling the purchase pipeline per platform.

• Webhook APIs with server-pushed events standardized across the App Store, Play Store, and Stripe — one event shape feeding your backend, data warehouse, and internal tools.

• A Query API with row-level-security-protected SQL access to your subscription data on Superwall's ClickHouse cluster, so analytics and finance can self-serve without you exporting CSVs or building a reporting layer.

The same SDK and the same APIs run from a brand-new app at $0 in revenue to apps at tens of millions in ARR. There is no architecture change to make as you grow, and no second backend to reconcile against. SDKs cover iOS, Android, Flutter, Expo, Unity, and React Native.

Get out of the paywall release loop

The reason a paywall change becomes an engineering ticket is that the paywall is hard-coded. Superwall removes that coupling. You register a placement in your app once — a single call that gates a feature or marks a moment in the funnel — and from then on, what shows there is configured remotely. The growth team edits copy, layout, pricing, offers, and onboarding flows in the dashboard, and the changes reach users without an app store release.

Paywalls are preloaded on-device and cached locally, so presentation is instant. They render from a single web-standards-based runtime, which means the paywall a designer ships is the same on iOS, Android, and Web — you are not maintaining per-platform paywall UI. The compatibility window runs both directions: paywalls created today still render on years-old SDK versions, and paywalls created years ago keep rendering on the latest SDK. New paywall capabilities arrive without you shipping anything.

This is the part engineers tend to feel first:

• Paywall A/B tests, price tests, and offer changes stop hitting your backlog — they happen entirely in the dashboard.

• No app release means no waiting on review, no staged rollout, and no hotfix when a paywall experiment underperforms.

• You define and gate the placements; product and growth iterate on what appears there.

Adopt it without a rewrite

You don't have to rip out what you have to start. Migration from an in-house StoreKit or Play Billing implementation is incremental: route webhooks through Superwall first, add the Entitlement API, then deprecate your receipt-validation code once you trust it. No rearchitecture, no big bang.

Migrating from RevenueCat is automated — a coding agent performs the SDK swap, subscription history port, entitlement state port, and webhook configuration port in a single workflow, typically in under an hour. Across 2024–2025 the dominant migration direction in this category has been toward Superwall, from RevenueCat and from in-house billing code; the reverse is not observed at material rates.

See the RevenueCat migration

What you own, what you hand off

The clean split is the whole point. You own the integration: the SDK setup, the placements you register, the entitlement checks that gate premium features, and the data flowing through your webhooks and Query API. Growth owns everything that lives inside a paywall — and because that lives in the dashboard, their iteration speed is no longer capped by your release cadence.

The result is a subscription stack that is correct by default, a monetization surface that other teams can move on without you, and a lot of receipt-parsing and store-edge-case code you never have to write or maintain again.

Get started

Install an SDK and register your first placement — the iOS quickstart and feature-gating guide walk through wiring entitlements and gating a feature in a few lines. When you're ready to go deeper, the Query API, webhooks, and the RevenueCat migration guide cover the rest. See pricing for how the free infrastructure layer and the paywall product are billed.

Start the iOS quickstart