Like there is the Official Mastodon app for Mastodon, and Element app for Matrix, which app is considered the most official lemmy app for Android [possibly also for ios]
Or atleast, the app which supports most(if not all) the features available in Lemmy
I’d say that you’re going to get a good experience from Sync. He’s constantly adding features to it that actually go above and beyond what Lemmy offers by default.