What sucks is that there's no foolproof way to make sure it keeps running. Not so much of an issue for a techie, but I tried to use it so my mom's photos keep getting backed up, and I have to remind her at least once a month to start it again. And that's despite having all the energy saving stuff disabled for the app, and having Autostart allowed. I don't know whether there's still some heuristic to kill apps that run in the background and haven't been interacted with in X days or something.

And then, at least on my phone, it rarely seems to goof up when the app starts the actual syncthing process. Syncthing-fork then just keeps showing "syncthing is starting up" on the status page and the battery drains quickly. It's still the best solution imo to have your photos reliably get backed up no matter where on this planet you are without resorting to Google/$PHONE_MANUFACTURER Cloud.