It seems that many popular mobile apps nowadays have their own design language. I like uniformity between my apps so I greatly respect when an app developer takes the care to design their app to follow their OS Human Interface Guidelines. For example, apps like Apollo (and wefwef/Voyager for Lemmy) rose to popularity partly due to looking and feeling like native iOS app
Ivory from the Tweetbot devs, although is not purely Apple-y, it feels like it belongs in the platform while also adding something of their own.