Your app looks nice and does what was wanted.

I wonder why you use any habit tracker, after all, you notice yourself when you slack on them. And being reminded that you didn't do anything is not helpful and having done a whole month does not guarantee the next month. How do you see it?

I am asking because a lot of times I created beautiful apps just to realize they were too tedious to use or did not supply a long term benefit. This could or could not apply to your App.