One of the more interesting updates I saw mentioned in release notes for Lemmy v0.19 was scaled sort. So that posts from smaller communities can get bumped up more in the feed.
I currently use Sync, and it's great, but doesn't seem to have implemented this yet. Is there another mobile app for Android that does?
While waiting for the update, I think if you set scaled as your default sort (on desktop), I think it will be your default in Sync. Might work on other apps too.