We create one sheet, My Expense Tracker, in your Google Drive. The app can open only that sheet.
It can't see your other files, photos or email. LogCraft Studio never sees your data.
Google will say the app can “see, edit, create and delete only the specific Google Drive files that you use with this app”. That means just your tracker sheet.
You can disconnect anytime in your Google Account: Security → Your connections to third-party apps.
The sample data on this phone will be replaced by your own entries.