Honestly, I'm torn. I like kbin a lot. It takes some getting used to with understanding the terminology with magazines and threads and whatnot. I use it on desktop and as a PWA on my phone (through Hermit). Initially, I liked it more than Lemmy. It felt more polished, and I felt more at ease morally with the "Lemmy is developed by tankies" stuff (but each instance has their own ethics and politics, so eh).

But now, I find myself on Lemmy a lot more. It feels more "at home" when migrating from Reddit - and things are more straightforward with communities, posts, and so on. Plus, Jerboa on Android is nice (don't know about iPhone app experience). Both the app and Lemmy itself seem to be getting quicker updates with features, bug fixes, etc.

That said, I've personally chosen to keep kbin with kbin and Lemmy with Lemmy - but you definitely could sub to and interact with both from either. So it's kind of a moot point in terms of which is "better," as it boils down to personal preference. I'm leaning more Lemmy these days.

Lemmy has some great mobile apps. I’m using https://wefwef.app now and it’s basically indistinguishable from Apollo.