Caravella, an open source Android app to split group expenses for trips, shared flats and events. No account, no ads, no tracking: everything stays on your phone.
You can share a group with your friends' phones over Wi-Fi or Bluetooth: you pair with a QR code, it's end-to-end encrypted and no server is involved. You can also add an expense by voice or by reading a receipt with the camera.
Now working on 2.4: a simpler way to invite people into a group, and settling up with the fewest payments.
https://duea.page/caravella/ · source: https://github.com/calca/caravella
Feedback is welcome, especially on sync.