There is something like this in Supermemo (flashcard program, like Anki). But it need a lot of data like your sleep time, historical result of your study (at wh

There is something like this in Supermemo (flashcard program, like Anki). But it need a lot of data like your sleep time, historical result of your study (at what hours you answer more correctly), etc. [1][2] But to me this ideas feels like procrastination by building anti procrastination apps. To most people, Pomodoro timer is enough. If you really want to make that app, just be aware that the rabbit holes can be quite deep. Good luck OP! [1] Planning a perfect productive day without stress https://supermemo.guru/wiki/Planning_a_perfect_productive_day_without_stress https://supermemo.guru/wiki/Planning_a_perfect_productive_da... [2] Natural creativity cycle https://supermemo.guru/wiki/Natural_creativity_cycle https://supermemo.guru/wiki/Natural_creativity_cycle