On iOS, the Lemmy web experience is temperamental at best and unnavigable at worst. Although you can put bookmark/icon on an iOS home page, there is no navigation option so that once you’ve linked into a thread there’s no way to get back to where you were. Even in a (safari-underpinned) browser the website seems to be very finnicky with back and forth navigation into and out of content. To be fair, this is an iOS problem, not a Lemmy/kbin problem, but it still increases friction for the mobile user.