callkit

AirSIM

+23

Source-available, noncommercial cross-device calling and messaging for Samsung Android, iPhone, Apple Watch, AVF Linux and Cloudflare Workers.

react-native-callkeep

+2

iOS CallKit framework and Android ConnectionService for React Native

ios-app-where-it-breaks

+2

Where iOS development actually breaks: Dynamic Island, CallKit, HealthKit, APNs, ReplayKit. Every wall hit on a real device — and most of them fail silently. Docs in Chinese, written to be handed to your AI.