Inku vs Renshuu for Japanese
Renshuu is a large, customizable Japanese study platform. Inku is a smaller, prepared routine for kana, kanji, vocabulary and phrases.
How does Inku compare to Renshuu?
Inku publishes this comparison. Renshuu's App Store listing describes learning paths for textbooks and the JLPT, over 10,000 user-made lessons, 12,000+ kanji, over 800 grammar expressions, native-recorded vocabulary audio, games and a mascot, and settings that can be customized in detail. It also says the free version is unlimited. Inku is the opposite shape: a prepared Japanese catalog, lessons of five and FSRS review, with few settings.
Choosing between Renshuu and Anki? Read the direct Renshuu vs Anki comparison for prepared Japanese practice, personal decks, and the review work each asks you to do.
When is Inku the better choice?
- You want fewer decisions. Renshuu offers many quiz styles, schedules and settings. Inku gives you one way to learn and one way to review, so the next step is always clear.
- You want a quiet session that ends. Renshuu includes games, coins, a mascot and community lessons. Inku shows a streak and progress and ends a session when its cards are done.
- You want new items taught before they are tested. Each Inku lesson shows five new items with reading, meaning and audio, then asks you to recall them.
When is Renshuu the better choice?
- You want to study without paying. Renshuu's listing says the free version is unlimited, with no timer before you must pay. Studying in Inku needs Inku Pro.
- You want grammar and a very large kanji library. Renshuu lists over 800 grammar expressions and 12,000+ kanji. Inku has no grammar lessons, and its kanji course has 960 kanji.
- You want Android or deep customization. Renshuu has web, iPhone and Android apps and detailed settings. Inku has no Android app and few settings.
Inku and Renshuu side by side
| Criterion | Inku | Renshuu |
|---|---|---|
| Shape | Prepared decks and one review flow | Large toolkit with many paths and settings |
| Grammar | Not taught | 800+ expressions (per listing) |
| Kanji | 960, N5–N1 | 12,000+ (per listing) |
| Answering | Flip and grade | Multiple choice, typing or writing |
| Community | None | User-made lessons and multiplayer games |
| Cost | Inku Pro subscription | Unlimited free version; optional Pro |
| Platforms | iPhone app and web app | Web, iPhone and Android |
Sources and pricing
Pricing last checked: October 16, 2026. Prices can vary by country, platform, checkout, tax, and promotion.
Our take
Renshuu offers far more than Inku, and it costs nothing to start. That breadth is also its cost: you choose paths, quiz types and settings. Inku suits learners who would rather open a prepared deck and review.
Verdict
Choose Renshuu for a broad, customizable Japanese platform with a free version. Choose Inku for a smaller, prepared routine with fewer settings.
If you are unsure, try Renshuu's free version and Inku's introductory lesson, then keep the one you return to without effort.
Read next
- Renshuu vs Anki. Compare Renshuu with Anki if you want more control than a prepared app gives.
How we research this
Inku publishes this comparison, so it is not neutral. We check competitor claims against their official websites, help pages and App Store listings (last checked October 16, 2026), and Inku claims against the current iPhone listing and web app. Inku's pronunciation audio is synthesized speech, not human recordings. Found an error? Email app@inkujapanese.com and we will correct it.
Common questions
Is Renshuu really free?+
Renshuu's App Store listing says the free version is unlimited and is not limited by a timer. Optional Renshuu Pro purchases exist, and prices vary by store and region.
Which has more Japanese content?+
Renshuu, by a wide margin, including grammar and a much larger kanji library. Inku has less content and fewer choices, with a single prepared review flow.
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