OSMTracker for Android™ official source code repository is https://github.com/labexp/osmtracker-android.
For more information about the project, documentation and bug reports please visit https://github.com/labexp/osmtracker-android/wiki
If you are interested in contribute to this project, please visit https://github.com/labexp/osmtracker-android/blob/master/CONTRIBUTING.md to know the way you could do it.
To help translate OSMTracker, please visit https://www.transifex.com/projects/p/osmtracker-android/