Revenge bedtime procrastination

What are your favorite iOS/iPadOS/macOS apps?
I’m looking for new apps to try out. I have a soft spot for apps that are written in Swift or at least follow Apple’s HIG. I’m also curious to know what you use these apps for!
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Lemuroid and Libretube are good examples. I personally think they’re beautiful and match great with stock (Google) Android Material Design
Liftin (iOS, watchOS) is a new one I discovered recently. It looks and feels like an extension of the Apple Workouts app geared towards strength training

What's your favorite third-party app that integrates beautifully design-wise with your native iOS/Android apps?
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