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Learn Japanese that actually sticks
A spaced-repetition flashcard app for Japanese: JLPT vocabulary, kanji breakdowns, AI-generated example sentences and a streak that keeps you coming back.
Free — no ads, no in-app purchases, no asterisk.
A review takes seconds
Flip the card, grade yourself, done — and the grade sets the schedule: easy answers push a card days into the future, hard ones bring it back sooner. That's spaced repetition — you review less and remember more.
覚えるおぼえる · oboeru(to) memorizeAgainHardGoodEasy
A library that grows with you
Ready-made collections cover the whole journey — hiragana and katakana, radicals, everyday topics and the complete JLPT N5–N1 vocabulary. Pick one and start reviewing.
30+ collectionsKana to JLPT N1
Every card explains itself
Example sentences, background notes and native pronunciation — generated for any card, including the ones you write yourself.
覚える
覚える
(to) memorize
おぼえるoboeru
The real session card — flip it, open the panels, play the recordings.
Let AI build your decks
Describe what you're studying and Oboeru generates the whole collection — readings, translations and all. For a 200-card exam deck, that looks like this.
Oboeru0mCards0/200
- Spell out the exact card format
- Ask again — 30 cards at a time
- Copy each batch to a spreadsheet
- Fix duplicates and wrong readings
- Reshape everything into CSV
- Import, map fields, fix errors
Everything a Japanese learner needs
Remembers for you
FSRS spaced repetition schedules every card for the moment you would forget it — a few focused minutes a day instead of cramming.
JLPT-ready library
Curated collections from hiragana and katakana up through JLPT N5–N1 vocabulary, ready to study with one tap.
Kanji & radicals
Every kanji broken into its radicals, with meanings, stroke counts and On/Kun readings right on the flashcard.
AI that explains
Example sentences and background notes for every term, generated with Claude and tuned to your level.
Streaks & achievements
Daily goals, streak freezers and badges keep the habit alive — the hardest part of language learning.
Progress you can see
Activity heatmaps, rating breakdowns and a difficulty history for every single card.
How it works
- 1
Pick a collection
Start with JLPT N5, kana, or add your own words in seconds.
- 2
Review a few minutes a day
The scheduler brings each card back right before you forget it.
- 3
Watch it stick
Streaks, stats and per-card difficulty charts show your memory getting stronger.
OboeruYour first review takes two minutes
Free to use — your cards sync between web and iPhone.