The app Things, macOS and iOS, is one of the best I’ve ever used in terms of well thought-out design, meaningful aesthetics, and reliability. I’ve tried every popular task management app and it’s the only one that feels like the completion of my half-baked ideas about how task management should work. The physics of how the data behaves just feels right, to the point that Apple is copying them not the other way around. And it syncs instantly and without ever corrupting data, both unlike Reminders.