I greatly respect when an app developer takes the care to design their app to follow their OS Human Interface Guidelines. Apps like Apollo (and wefwef/Voyager for Lemmy) for example rose to popularity partly due to looking and feeling like native iOS apps
It seems that many popular mobile apps have their own design language. Though may be pretty in their own right, I like consistency between my apps
To give an example, one of my favorite is Liftin (iOS). The dev did a great job making it feel like an extension of the native Apple Workouts app
The best was defintely Apollo. Memmy seems to be trying to push the native iOS UI forward, but it’s early days for that app.