Repo: https://github.com/arajnoha/phodo ultra minimalist web todo app (php+html+css). stores everthing in single JSON, has a day view, allows you only to mark as done, delete and add. list days back and forth + jump to today. When task is added while listing days, its added to that listed day. PHP and CSS are both below 100 LOC.

Im working on simplyfing the code further. I tried really all of the "productivity" stuff to stay organised. Got angry multiple times, went to pen and paper, was OK, but i felt i just need a slight glimps of tech to make it more functional. Something little more than plaintext file, but not much.