This is an interesting request and the replies remind me that MY favourite todo + habits + pomodoro + kanban app is the little-recommended TickTick.
It’s simple, highly customisable, you can use as much or as little of the functionality as you like, and there’s a great web version too.
I’m a very happy paid user and have been for YEARS.
But you rarely hear about it.
https://mastodon.functional.computer/@samir/114721143306699787