JJS Kill Clipper is a personal desktop tool. This policy explains what it does with Google account data.
The app asks for the drive.file permission only. With it, the app can see and manage files that it created itself in the signed-in user's Google Drive. It cannot see any other files in that Drive.
It uploads the video clips it records to a folder in the user's own Drive, and deletes those clips after 14 days. Nothing else is read, created, or changed.
No data is sent to the developer or to any third party. Nothing is sold, shared, or used for advertising. The sign-in token is stored only on the user's own computer.
Access can be revoked at any time from your Google Account's third-party access page. Deleting the app's folder in Drive removes all clips it uploaded.
Questions can be sent to the support email shown on the app's Google sign-in screen.