Bluetooth Chat is an open-source app: https://github.com/ynavizovskyi/BluetoothChat

Bluetooth Chat allows you to send group and private messages over Bluetooth with no internet required. With Bluetooth Chat you can communicate with nearby friends while in the wilderness, on a train, plane or any other environment with no internet.

Main features of Bluetooth Chat app:
- Group and private chats over Bluetooth;
- Sending text messages and images;
- Multiple simultaneous connections;
- History synchronization for Group Bluetooth Chat;

Ever wondered how to talk to a friend on a plane two rows behind you? The answer is Bluetooth Chat!
Hiking in the wilderness and want to talk to somebody in another tent? Bluetooth Chat is here to rescue you!

Bluetooth Chat might not be your daily choice, but when you need it the most it’s got your back!