LanBackup

How to use it

side load the APK on your android phone, run the server on a linux machine and then use the credentials provided in the GUI to set up a connection in the app. Select folders to source from, make and update backups whenever you feel like it.

This does not reach out to the internet for anything, does not collect and kind of user or usage data. The only communication is between the android app and the linux app.

I will eventually make this available on the android "play" store, but it's complicated with a two part app.