Unified specification and tooling for implementing in-app purchases: standardized APIs, generated types/spec, framework SDKs, and hosted receipt-validation SaaS with dashboard for consistent behavior.
The standardized protocol for implementing in-app purchases across all platforms
OpenIAP is a unified specification for in-app purchases across platforms, frameworks, and emerging technologies.
The OpenIAP specification standardizes IAP implementations to reduce fragmentation and enable consistent behavior across all platforms. This is especially critical in the AI coding era where standardized APIs enable better code generation.
This monorepo contains all OpenIAP packages:
Framework SDK implementations built on top of OpenIAP. These libraries are managed in this monorepo — see discussion #86 for the rationale and migration context.
Visit openiap.dev for complete documentation and API reference.
Have a question or need help? Ask in the relevant GitHub Discussions category:
For bug reports, please open an issue.
See CONTRIBUTING.md for development setup, workflows, and contribution guidelines.
Thank you to our sponsors for supporting the OpenIAP initiative. Become a sponsor
| Library | Platform | Package | Downloads |
|---|
| expo-iap | Expo | ||
| react-native-iap | React Native | ||
| flutter_inapp_purchase | Flutter | ||
| kmp-iap | Kotlin Multiplatform | — | |
| maui-iap | .NET MAUI | ||
| godot-iap | Godot 4.x | — |
| Library | Discussion |
|---|
| openiap-apple | Q&A |
| openiap-google | Q&A |
| expo-iap | Q&A |
| react-native-iap | Q&A |
| flutter_inapp_purchase | Q&A |
| kmp-iap | Q&A |
| maui-iap | Q&A |
| godot-iap | Q&A |
Surfaced from shared tags and platforms — no rankings paid for.