timesheet_ for Google Sheets:
This App tracks time spent on tasks and saves summaries in Google Sheets on your Google Drive.
The first time you run the app, it asks you to sign in to your Google account. Your Google credentials are stored so that you only have to sign in once.
You create task names when you start them, or select from previously done tasks.
At the end of the first day you run the app, it creates a folder on your Google Drive called "timecards", and two spreadsheets named for the current month and year, in that folder.
Each day, a daily summary and daily list of time spent on each task are written to these spreadsheets.
New spreadsheets are created each month.