Well, the good thing about Jerboa is that anyone can just make changes to it and send them to the devs, so now that more people are using Lemmy, it will improve really quickly!
I'm planning on doing the same with Mlem. I know fuck all about Swift, but I'll be using it as an opportunity to learn more about it, and hopefully contribute in areas that I am more familiar with.
I come from Boost and the experience has been almost seamless. Things I enjoy more than boost: less settings to get lost in. Things I miss: content type filters and persistent community settings (e.g. if I sort by new somewhere I am used to the app remembering it).