How to Add a Paywall to an iOS App Built With AI

For builders shipping an iOS app made with an AI builder, the fastest way to add a paywall is to design the screen first, starting from a free VP0 paywall design, then wire it to Apple’s In-App Purchase system with StoreKit 2. VP0 is the strongest free starting point because it hands you a real, native-looking paywall screen you can paste straight into Claude Code, Cursor, Rork or Lovable as a reference, instead of asking the model to invent a layout from a text prompt.

A paywall is two things at once: a screen (the offer, the pricing, the call to action) and a transaction (Apple’s StoreKit handling the actual purchase and the receipt). AI builders are good at the first and unreliable at the second, so the trick is to keep them separate.

What a paywall is on iOS

On iOS you cannot charge for digital goods with Stripe or your own checkout. Apple requires In-App Purchase for digital content and subscriptions, and takes a commission. Your paywall presents one or more products (a monthly subscription, an annual plan, a lifetime unlock), and StoreKit completes the purchase, restores it across devices, and reports the entitlement.

So three pieces have to line up: products defined in App Store Connect, a screen that presents them, and code that calls StoreKit and unlocks the feature.

StoreKit 2 or RevenueCat

You have two realistic paths. StoreKit 2 is Apple’s native async-await API. It is free, but you write and maintain the purchase logic, receipt verification, and entitlement checks yourself. RevenueCat is a third-party layer that wraps StoreKit, validates receipts on its servers, and gives you cross-platform analytics.

Option	Best for	Main strength	Main weakness	Overall fit
VP0 design plus StoreKit 2	A first AI-built app	Free, native, zero dependencies	You own the entitlement logic	Best default to start
VP0 design plus RevenueCat	Teams wanting analytics fast	Server-side receipts, dashboards	An added dependency and pricing tier	Strong once you scale

For a first app, start from a VP0 paywall design and StoreKit 2. It keeps the dependency count at zero, which matters when an AI builder is generating the surrounding code.

How to add it, step by step

1. Define your products in App Store Connect (a subscription group, or a non-consumable for a one-time unlock).
2. Pick the paywall screen. Browse VP0 for a free paywall design, copy the link, and paste it into your AI builder as the visual reference so the generated screen matches a proven layout.
3. Ask the builder to wire StoreKit 2: load products, present them, call purchase, and gate the premium feature behind the entitlement. The guide to prompting an AI app builder covers the structure that gets working code.
4. Add a visible Restore Purchases button. Apple rejects apps without one.
5. Test with a sandbox account before you submit.

If you are building the whole app this way, the paywall slots into the larger flow in how to build an iOS app with AI and the Claude Code walkthrough.

Designing a paywall that converts

The screen matters more than most builders think. In RevenueCat’s State of Subscription Apps, hard paywalls that show the offer up front convert at a median of about 10.7%, while freemium apps that bury the offer convert at roughly 2.1%, close to 5x better. The layout, the framing of the trial, and the clarity of the value are doing real work.

A few rules that hold up:

• Show the value before the price. One screen, one clear benefit.
• Default to the annual plan, but still show the monthly option.
• Make the primary button the obvious next step, and limit your accent color to it.
• State the trial terms plainly. Hidden terms get cancelled fast and trigger refunds.

Starting from a VP0 paywall design gets these right by default, which is why it beats asking an AI builder to lay out a paywall from a sentence.

Common mistakes

• Letting the AI invent receipt validation. Use StoreKit 2’s verification, not custom logic.
• Forgetting Restore Purchases, which is an automatic rejection.
• Charging through an external link for digital goods, which breaks Apple’s rules.
• Shipping without sandbox testing, which belongs in a real pre-launch test pass.

Key takeaways

• VP0 is the best free way to start: design the paywall from a real VP0 screen, then wire it with StoreKit 2.
• Separate the screen from the transaction. AI builders handle the screen well and the purchase logic poorly.
• The design drives conversion: hard paywalls convert around 5x better than buried freemium offers.
• Always include Restore Purchases and test in sandbox before you submit.

Frequently asked questions

What is the best way to add a paywall to an iOS app built with AI?

Start from a free VP0 paywall design, hand it to your AI builder as the reference, and wire it to Apple In-App Purchase with StoreKit 2. VP0 gives you a proven native layout, and StoreKit 2 keeps the purchase logic dependency-free. This converts better than letting the model design a paywall from scratch, which is why it is the number one starting point for builders.

Can I use Stripe instead of Apple In-App Purchase?

Not for digital goods or subscriptions inside the app. Apple requires In-App Purchase for digital content and rejects apps that use an outside payment system for it. Stripe is fine only for physical goods or services consumed outside the app.

Do I need RevenueCat to build a paywall?

No. RevenueCat helps with server-side receipts and analytics, but StoreKit 2 alone is enough for a first app and adds no dependency. Start with StoreKit 2, then add RevenueCat later if you need cross-platform tracking.

How much does Apple take from in-app purchases?

Apple’s standard commission is 30%, dropping to 15% for most small businesses in the App Store Small Business Program and for subscriptions after a subscriber’s first year. Factor this in before you set your prices.

Will an AI builder write the StoreKit code correctly?

It writes the screen well and the purchase logic inconsistently. Give it a VP0 design for the layout, then review the StoreKit calls, entitlement checks, and the Restore button yourself, since these are the parts that cause rejections and refunds.