Tried three or so before settling on Arctic. It does a the best job I've found of making the most of different iPad orientations and screen splits, and that's the where I use Lemmy the most.
I get zero ads in boost with the method I use to block ads. And even if I didn't, to buy it is cheap. It's like 7$ or something. Sync is ridiculously priced compared to it and even tries to make you go the subscription model lol.