Wow, that actually explains my app perfectly.

I also posted on your other needgap.

http://www.deadlinesapplication.com/

https://www.reddit.com/r/SideProject/comments/fw5l53/another_productivity_timer_app_based_on_short/

How it solves focus drift:

Basically try to get things done within 1 minute, it will alert you and reward you for trying. Even if you didn't get it done that minute you can try the next minute, and the next, etc.

You can also set the interval timer to 5, 10, and 20 minutes.

It addresses the problem that our attention spans are short.

- You can also make commitments (loss aversion) where if you don't use it for 20 minutes right now you will lose a cute animal that you collected from using the timer.