Japanese study guide
Cotobara vs WaniKani: Do You Need Both to Learn Japanese?
WaniKani drills kanji readings; Cotobara builds usable JLPT and everyday vocabulary. What each one is for, and whether you should use both together.
If you are comparing Cotobara and WaniKani, the good news is that this is not really an either/or decision: they are built for two different jobs. But it is worth understanding exactly what each one optimizes for, because that tells you which to start with and whether you eventually want both.
What WaniKani is for
WaniKani has one clear mission: get kanji and their readings into your long-term memory. It teaches radicals, then kanji, then just enough vocabulary to reinforce those readings, all through a fixed spaced-repetition ladder with mnemonics.
It is excellent at that job. If your problem is "kanji still look like squiggles," WaniKani is one of the most reliable ways to fix it.
What WaniKani is not for
WaniKani's vocabulary exists to reinforce kanji readings, not to give you a broad, exam-ready, conversation-ready vocabulary. That means:
- It skips extremely common words that don't happen to teach a new reading.
- Its ordering follows kanji teachability, not word frequency or JLPT level.
- It trains recognition ("I've seen this") more than recall ("I can produce this when I need it").
None of that is a flaw; it is just outside WaniKani's scope.
What Cotobara is for
Cotobara is a vocabulary system. It gives you:
- A curated, JLPT-relevant corpus organized by level and frequency.
- Real example sentences with natural-sounding audio, plus hover-to-translate glossing on most words.
- A recall-focused review engine: lessons, reviews, and mistake review tuned so words stick, not just look familiar.
- Progress you can actually read: mastery by level and exam-readiness, not a raw card count.
Side-by-side
| WaniKani | Cotobara | |
|---|---|---|
| Primary job | Kanji + readings | Usable vocabulary |
| Ordering | Kanji teachability | JLPT level + frequency |
| Trains | Recognition | Recall |
| Example sentences | Reinforcement only | Natural-sounding audio on every word, hover glosses |
| Progress view | SRS stages | Mastery + exam-readiness |
So which should you use?
- Just starting with kanji? WaniKani is a great engine for that specific problem. Start there.
- Can read a lot of kanji but words don't come when you speak or read? That is the recall gap, and it is exactly what Cotobara fills. See Why you can recognize kanji but can't recall words.
- Want the complete picture? Use both. Cotobara imports your WaniKani progress so you never re-study a word you've already burned; the two divide the work instead of overlapping. We wrote the full setup in How to use Cotobara with WaniKani, and the case for the pairing in Why WaniKani + Cotobara is the best combo.
The short version: WaniKani teaches you to read kanji; Cotobara turns that into vocabulary you can use. They are strongest together.