/e/'s Apps gets it’s apps from an website called cleanapk.org who state that
Most of open source applications available through our API are mirrored from F-Droid.
So, for these apps, they are essentially providing the same
.apk files (signed with the same signing key) as F-Droid, which is why it is possible to update these apps in either F-Droid or Apps. Unfortunately they use the word “most” which implies that not all open source applications available from Apps come from F-Droid.
If the app can be updated by both apps, then it is probably safe to do so. However, I avoid using /e/s Apps because
- F-Droid is a more mature, less buggy app than /e/'s Apps
cleanapk.org are very secretive about themselves: there is no information available about who owns and operates the site, where they are based, or where they get their non-open source apps (and the open source apps that don’t come from F-Droid), and I don’t like not knowing who I am doing business with
- The effort /e/ put in to creating and maintaining Apps would be better spent (in my opinion) on other parts of the /e/ software whicy are not freely available elsewhere