A chat application that uses both internet and local bluetooth
iOS App - https://github.com/sebastian-king/Charry/tree/ios
Android App - https://github.com/sebastian-king/Charry/tree/android
Web server - https://github.com/sebastian-king/Charry/tree/web
also on https://www.charald.com and https://www.charald.tech
HackUTA 2017 project