This my experience on an iphone 12. The UX doesn't really work for me yet but I absolutely love the concept, will keep an eye on it (would sign up for a mailist if you have one).
Thanks for giving me the device. I did have some trouble getting it working on iOS so maybe I didn't iron out all the bugs. I'll get working on a fix. I think we're already emailing so I can add that email to the mailing list if you'd like?