KanjiKatch ingests anything with Japanese on it — your handwritten notes, a textbook page, a news screenshot, a manga panel. We catch every kanji, word, and sentence, and build a working knowledge of what stuff you've seen. You review that and read in context to really learn.
よ・む / ドク
read · study · count
In the wild
あのカフェで新聞を読むのが日課です。
Reading the paper at that café is part of my routine.
・The cycle ・
No importing CSVs. No copying readings off Jisho. Snap a textbook page, a sticky note, a news article on your phone — anything with Japanese on it. KanjiKatch turns it into a deck that knows what you already know, then keeps feeding you new material from inside it.
Handwritten notes, a textbook spread, a news screenshot, a manga panel, the lyric sheet on your fridge — if it has Japanese on it, KanjiKatch can parse it. Rough handwriting included.
Every kanji, vocabulary item, and full sentence on the page is pulled out for you, with readings, meanings, and example sentences filled in. Edit anything that's not quite right in one tap.
A spaced repetition schedule keeps the words you almost know in front of you and quietly retires the ones you've nailed. Daily review takes minutes — not a planning session.
Fresh sentences calibrated to your exact deck. Studied words glow gold; partials get a teal underline. Tap an unfamiliar word and it becomes tomorrow's catch. The cycle compounds.
In the wild
After every review, KanjiKatch generates fresh sentences seeded with words you've actually studied — and stretched with one or two new pieces sized to where you are. Studied words glow gold. Partials — new words built from kanji you already know — get a teal underline. Tap anything new and it joins your deck.
毎朝、新聞を読みながら、紅茶を飲みます。
Every morning I drink black tea while reading the paper.
・Built for ・
KanjiKatch doesn't pick the words for you. Your materials do — anything with Japanese on it, and that's the whole point.
Genki, Tobira, Quartet — turn each chapter into the only deck you need for it.
Snap the whiteboard, your handout, or last night's homework. Be ready for Friday's quiz.
Catch the words on the page in front of you, not the JLPT list someone else made.
Screenshot subtitles, signage, lyrics, anything. If kanji is on it, KanjiKatch can read it.
・Why KanjiKatch ・
We're not trying to replace the great tools you already use. We're the missing one — the deck shaped exactly by what's in front of you today.
・FAQ ・
Anything with Japanese on it. Handwritten notes, textbook pages, news screenshots, manga panels, signage you spotted on the street, sticky notes from class, subtitles from a paused show. KanjiKatch was built on rough handwriting — anything unclear, you can correct in one tap.
Every sentence is built from words in your deck, calibrated to your exact level. Beginners get short sentences with one or two unfamiliar pieces; advanced learners get longer, denser ones. As your deck grows, so does the reading.
Anywhere from your first kanji to N1. KanjiKatch doesn't pick a curriculum for you — your materials do. Beginners get the most out of textbook pages; advanced learners feed in novels, news articles, and screenshots from anything they're already reading.
Never. KanjiKatch fills in readings, meanings, and example sentences when it catches a new word. Edit anything that doesn't feel right.
It doesn't try to. WaniKani is a great curriculum if you want one chosen for you. Anki is a great empty deck. KanjiKatch is the one that matches the page you're reading right now — and keeps generating new reading from the words you've already learned.
Free forever for the daily review habit — 10 starter extractions plus 5 per month, unlimited reviews. Pro ($10/mo or $100/yr, with a 7-day free trial) unlocks unlimited captures, audio on every sentence, 3–5 personalized sentences per session, and a session recap email. See the full breakdown on the pricing page.
・Catch the next one ・
Sign up free, take one photo, and watch a personal review schedule build itself.