I learned that one major drawback of F-Droid is that it cannot auto-update packages as it does not support session based installs. Both, Droid-ify and NeoStore seem to support this and therefore can silently update packages.
My Question is: When I switch from F-Droid to Droid-ify or NeoStore do I get auto updates for already installed apps or do I have to reinstall them to make this work (I do not want to lose my app data)?