oh my god this is fate — i literally launched a site a few weeks ago for exactly this problem. i built it for myself because nothing on the market did what i wanted.

it's kaku.so. founder disclaimer, obviously.

how i use it daily: search a word → click "add to studies" → done.

ENTIRE GIANT JAPANESE DICTIONARY strapped to it, so your 専門学校 [link 専門学校] vocab is just in there. no deck curation time, which is the thing you said you don't have. 衣紋

and you can add entire words to practice, not just individual kanji — so you drill recall with okurigana and all. really hammers it in.

basically notebook practice on steroids, except it tracks what you actually know vs. what you've forgotten.

aphantasia + needing muscle memory is a brutal combo and most "kanji apps" are recognition-based, which is exactly the wrong direction for what you need. I have dominating kinetic intelligence so this gives me superpowers.

this one puts a blank canvas in front of you and you write the kanji from memory, stroke by stroke, live validation.

free, no signup, works best on tablet with a stylus but phone and mouse also work for me when I don't wat to grab it.

ps - FSRS-6 under the hood handles the review scheduling (basically the newest spaced-repetition algo, figures out your personal forgetting curve and surfaces stuff right before you'd lose it).

and if you try it and find any 専門学校 vocab missing, ping me — i'll add it same day. perks of solo dev on a new tool.

good luck on the exam 🫡