What is the testing-first workflow for IAP?

It is a best practice where you create a .storekit configuration file before writing any code. This allows you to validate product IDs and test purchase flows locally in the simulator without needing App Store Connect.

Why do I need a centralized StoreManager?

A centralized StoreManager acts as a single source of truth for the app's purchase state, ensuring that transaction updates are correctly observed and finished, which prevents missing entitlements.

Can I test subscription renewals with this skill?

Yes, by using the .storekit configuration file guided by this skill, you can accelerate subscription renewal rates in Xcode to test expiration and renewal logic instantly.

Does this skill support legacy StoreKit 1 code?

No, this skill is specifically designed for StoreKit 2, which requires iOS 15 or later, as it provides a more modern and secure API for transaction handling.

Is this skill compatible with iOS 18?

Yes, it includes specific patterns for iOS 18 features, such as the new purchase(confirmIn:options:) method and latest subscription management views.

iOS In-App Purchase Implementation

Name: iOS In-App Purchase Implementation
Author: CharlesWiltgen

byCharlesWiltgen

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233

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Mobile Development

Implements robust, testable in-app purchases and subscriptions using StoreKit 2 for modern Apple platforms.

This skill guides developers through a testing-first workflow for implementing in-app purchases (IAP) on iOS, iPadOS, watchOS, and tvOS. It prioritizes the creation of .storekit configuration files to enable local testing before writing production code, ensuring that product IDs are validated and edge cases like failed payments or subscription renewals are handled gracefully. By enforcing a centralized StoreManager architecture, it provides a reliable pattern for transaction verification, entitlement management, and support for the latest iOS 18 features.

主な機能

01Centralized StoreManager architecture for scalable transaction handling

02Updated patterns for iOS 18+ purchase contexts and UI integration

03Comprehensive support for consumables, non-consumables, and subscriptions

04233 GitHub stars

05Testing-first workflow using .storekit configuration files for local validation

06Built-in transaction verification and lifecycle management with StoreKit 2

ユースケース

01Setting up a new subscription model with monthly and annual billing tiers

02Implementing and testing virtual currency systems for mobile games

03Refactoring legacy StoreKit 1 code to modern StoreKit 2 standards

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add charleswiltgen/axiom axiom-in-app-purchases

For use in Claude.ai and ChatGPT

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