Thanks a lot; I'll this it into account, and think how to improve this in next versions.

Though with the "next day" button, it would be a hard tradeoff - you might not have had this experience, but sometimes you travel and your timezone settings get messed up, or your phone's clock is reset etc. It's possible to design something that would avoid these problems, but it's a pretty big change in the internals of the app.

The temptation to delay clicking it and catch up the next day is strong.

This is surprising to me - the algorithm in the app makes it strictly easier to catch up when you click the button first, and then do the tasks rather than the other way around. Is it not enough incentive to make you want to click the button, rather than "cheat"?