The android app is available here.
Use the backup feature of the app to create a backup file (*.pctb) and copy
it from the sdcard to backup.json in directory of the app.
Running python main.py should will read backup.json and create
output.xlsx with daily work statistics per project.
You may need to pip install xlsxwriter to install the Excel file writing library.
The program uses python3.
It's just a very basic sketch for my use case so far, you may need to adapt a few things yourself. If you can't figure it out, let me know - I'll try to help.