There’s a few, I use Voyager myself on iOS. The only real difference from Lemmy so far that I see on a user side is that you cannot upload images directly into a comment, but that functionality is in the works.

If you want to give it a try, you’re welcome to join my PieFed instance https://quokk.au/. If you have any issues, let me know what app and if it’s ios/android and I’ll see if I can make you a guide.

Several apps have support now. Voyager, boost, and infinity. Though they don’t always support all the new features yet. But give a like experience to using Lemmy.

I was waiting for Boost to support it and it does now (though you need to install the beta). Other apps are listed here.