I've tried the web app, wefwef, Thunder, Lemming, Connect, Summit, Lemmur, Liftoff and Jerboa. Jerboa was the best so far but I'm using the 0.0.33 IzzyOnDroid version because of the issues with lemmy.world.
For me, it's the swipe navigation that means I can browse one handed. Do wish there was an ultra compact mode though, little too much dead space on the posts screen for me. I like it DENSE.