Calculate your carbon footprint. Food, transport, purchases, fashion, electricity and digital activities like streaming.

In-App Purchases interface for molecule.dev

M-of-N multi-signature coordination beyond MTC publisher_signature — marketplace large purchases, DID rotation, cross-chain bridge.

Cross-platform subscription management SDK for React Native — with remote-configured paywalls

Typescript code to be used by RevenueCat's hybrid SDKs. Not meant for external usage.

Official ClockNext SDK — record usage signals and manage plans, purchases, invoices, customers, and billing from your backend.

Qonversion provides full in-app purchases infrastructure, so you do not need to build your own server for receipt validation. Implement in-app subscriptions, validate user receipts, check subscription status, and provide access to your app features and co

Stripe subscriptions and one-time purchases: catalog sync, hosted checkout, the hosted customer portal, and the webhook handler

Vercel handler for Agentic Commerce Protocol (ACP) - Build checkout APIs that AI agents like ChatGPT can use to complete purchases

Validates In App Purchases receipts on App Store

Google Pay for online purchases

A lightweight cordova plugin for in app purchases on iOS and Android with a simple promise based API.

Privacy-friendly web analytics tracker for OpenRevenue — init, track custom events, and attribute purchases.

A NativeScript plugin for making in-app purchases

Expo unimodule for accepting in-app purchases

Operator-controlled KAS wallet, transfers, and x402 purchases for local agents on Testnet-10.

JS API for Filecoin Renewable Energy purchases

Subscriptions-only React Native SDK for App Swiss Knife — a drop-in replacement for RevenueCat's react-native-purchases public API.

Cordova plugin to add in-app-purchases (and subscriptions) into an app, use javascript to view, make, and complete purchases.

A support inbox that lands mail — and your signed-in users' own reports — in your own D1, classifies both on your own Workers AI binding, and links each sender to the account and purchases your app already knows about.