Kotlin library & app · Android 7.0+ · Windows (beta)
Flash
A Kotlin library and app for offline file transfer, chat and calls between nearby devices. No server, no internet, no account.
A Kotlin peer-to-peer engine and app that finds nearby devices on the local network and sends files, messages and voice or video calls directly between them, published as reusable Android library modules.
- 0servers, accounts or internet needed
- 12published library modules
- AES-256GCM end-to-end encryption (v2 beta)
- 2platforms, Android and Windows (v2 beta)
- Kotlin
- Coroutines
- Jetpack Compose
- WebSockets
- TLS 1.3
- WebRTC
- SQLCipher
v1.1.0 · Sep 2026 Download 2.0.0-beta Docs