Who uses this app: one person, its owner. It has no public sign-up and no other users.
What it accesses: through Google Sign-In it requests only the drive.file permission, which lets the app see and manage only the files and folders that this app itself created in the owner's own Google Drive. It cannot see any other Drive content, email, contacts or account information.
What it stores: an access token on the owner's own private server so the app can keep working. Nothing is sent to, sold to, or shared with any third party. No analytics, no advertising, no tracking.
Your choices: the owner can revoke access at any time at myaccount.google.com/permissions, and can delete the stored token from the server.
Contact: rmdmpu2@gmail.com