I used Google Sheets as a database and it actually worked

Author used Google Sheets as a lightweight database to power a web app that renders a Gantt chart.

The Google Sheet held tasks, dates, assignees, and status.

The tool is intended for scheduling for small teams.

Google Sheets allows multiple people to edit the same sheet simultaneously for collaboration.

Sheets provides free backup and version history to roll back changes, and the Python gspread library can read and write to Google Sheets.