I'm a high-school student and I built a free app to stop forgetting everything over the summer

Hey everyone, The school year is almost over, and every summer I hit the same problem: by September I've forgotten most of what I learned. It happens with everything. I feel confident with math formulas while I'm using them, but after a few months away they look like I've never seen them. Same with languages — my English and German feel solid at the end of the year or after finishing a book, and a few weeks later my vocabulary and grammar have basically evaporated. So I built a small app to fight that, called Revise: https://revise-o1t7.onrender.com/ The idea is simple: give yourself regular practice on the things you've actually studied, so they stick. You can practise math, history, languages, chemistry and biology — it generates exercises, reading texts (which you can translate word-by-word right in the app) and flashcards, all on a spaced-repetition schedule so things come back just as you're about to forget them. It works with whatever AI you already use: you copy a genera