Japanese Flashcards, Simplified
Swipe to study.
Snap to capture.
Let AI fill the rest.
Fuka is a Japanese flashcard app that removes friction so you can focus on learning.
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Free to study
All core features — forever.
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Upgrade only for AI
Unlock AI auto-populate when you want it.
青い
Tap to flip
Simple studying
that sticks.
Swipe right if you know it.
Swipe left if you need more practice.
Tap to flip the card and reveal the answer.
海
うみ
sea
青い
あおい
blue
空
そら
sky
Take a photo.
Find the words.
Snap any book, sign, or text. Fuka detects Japanese words instantly so you can pick what you want to learn.
Words detected
AI fills it in.
You learn faster.
Add a word and let AI auto-populate kanji, reading, meaning, and an example sentence in seconds.
FREE FOR STUDY. UPGRADE ONLY FOR AI.
Free
$0
- ✓Swipe flashcards
- ✓Create cards manually
- ✓Photo word detection
Pro
$2.99
✦ AI auto-populate
AI fills in kanji, reading, meaning, and example sentences.
Cancel anytime
FAQ
Do I need an account to use Fuka?
No. Core flashcard study, swipe review, and manual card creation are all free with no account required. An account is only needed for AI features.
What does the Pro plan include?
Pro unlocks AI auto-populate — snap a word and Fuka fills in kanji, furigana, English meaning, and an example sentence automatically. $2.99/month, cancel anytime.
How does the photo word detection work?
Fuka uses on-device OCR (Apple Vision) to detect Japanese characters in photos. It works offline — no internet needed for detection, only for AI generation.
What is the swipe review system?
Swipe right if you know a card — it moves on. Swipe left to practice it again. Tap to flip and see the answer. A lightweight spaced repetition approach built for speed.