Yes, there was an official Android client made by the same devs as the official desktop client. After the official devs decided to stop development on the Android client, some other dev forked it to keep up development.
The devs for desktop Syncthing were different from the Syncthing-Android devs. There was some collaboration but in the end the development was mostly separate. Source: I made syncthing-android.
why did they call it a fork? was there another syncthing on android before?
Yes, there was an official Android client made by the same devs as the official desktop client. After the official devs decided to stop development on the Android client, some other dev forked it to keep up development.
The devs for desktop Syncthing were different from the Syncthing-Android devs. There was some collaboration but in the end the development was mostly separate. Source: I made syncthing-android.
not really, i believe syncthing-fork existed even back when official syncthing supported android.
Yep, this is correct. It started as a “friendly fork” that added a few quality-of-life features that the official version didn’t have.