Don’t know how you missed it but the official GitHub page (where you took the screenshot from) clearly mentions it’s an iOS/Android app.
If you would’ve scrolled down just a little on that same page where you took the screenshot you’d see it also clearly mentions
It’s currently my “official” app to browse Lemmy.
It is incredibly good for an early build!
I’m pretty sure Memmy is cross-platform.
So far, I’ve tried Mlem, Memmy and Limbo.
I am liking Memmy the best!
Dude, I started with Mlem, then moved on to Memmy and now I am using wefwef full time!
I feel it’s the most polished out of all the apps on iOS.