steps-sync is a personal tool used only by its owner, Yousef Shanawany. No one else's data is accessed.
Daily step totals from the owner's Google Health data (scope googlehealth.activity_and_fitness.readonly).
One file, calorie-ledger-steps.json, in the owner's own Google Drive (scope drive.file, which only covers files this app creates).
The OAuth refresh token is stored on the owner's private server, readable only by the account that runs the tool. Data is not sold, shared, or used for ads. Use of information received from Google APIs follows the Google API Services User Data Policy, including the Limited Use requirements.
Access can be revoked at any time at myaccount.google.com/permissions.
Contact: askyous@gmail.com