Inku vs Renshuu
Inku vs Renshuu for Japanese
Renshuu offers a customizable Japanese study platform on web, iOS, and Android. Inku focuses on a curated iPhone flashcard routine.
How does Inku compare to Renshuu?
Renshuu is a long-running Japanese study site: vocabulary, kanji, grammar, sentences, games, and community lessons, with a generous free tier. Its iOS App Store listing (checked 2026-09-10) says the free version is unlimited, with no timer that forces a paywall, and lists native-recorded vocabulary audio, kanji, grammar, and thousands of user-made lessons. Inku is the opposite shape: one iPhone flashcard app with a curated catalog, FSRS review, and no account.
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 pick?
- You want a native iPhone flashcard session. Inku is an iPhone app (iOS 18+) with on-device review. Renshuu is web-first and also has iOS and Android apps. If you want a small, finished iPhone review rather than a large site, Inku is the closer fit.
- You do not want to customize. Renshuu rewards tinkering: custom schedules, quiz modes, and user lessons. Inku gives you one curated catalog and one review flow.
- You want a quieter daily loop. Renshuu includes games, a mascot, coins, and community lessons. Inku is built for a short, quiet session that ends.
When is Renshuu the better pick?
- You want a generous free tier across devices. Renshuu's App Store listing describes unlimited free study with no forced timer. It also has an Android app. Inku is free to download on iPhone; Inku Pro unlocks the full library.
- You want breadth: grammar, community lessons, and a huge kanji catalog. Renshuu's listing claims 12,000+ kanji, 800+ grammar expressions, and over 10,000 user-made lessons. Inku includes 400+ kanji with guided lessons across N5-N3, plus kana, JLPT vocabulary, and phrases. Those are different jobs.
- You want native-recorded audio inside a huge vocab library. Renshuu's 2026-09-10 iOS listing claims over 15,000 native-recorded audio files, plus sentence audio. Inku bundles pronunciation audio for its main card library.
Feature-by-feature
Sources and pricing
Pricing last checked: September 10, 2026. Prices can vary by country, platform, checkout, tax, and promotion.
| Feature | Inku | Renshuu | Best fit |
|---|---|---|---|
| Primary surface | Native iPhone app | Web-first, plus iOS and Android apps | |
| Audio | Bundled library audio | Native-recorded vocab audio (per App Store listing) | |
| Kanji scope | 400+ guided lessons, N5-N3 | 12,000+ kanji claimed on listing | |
| Customization | Personal cards | Deep schedules, quizzes, user lessons | |
| Daily feel | Quiet finite review | Games, community, large toolkit | |
| Community | Email only | Community lessons and support |
Inku's favor · Renshuu's favor · roughly even
The honest take
Renshuu is the power-user Japanese platform: free core study, huge coverage, and real audio. Inku is a finished iPhone flashcard product. Pick Renshuu when you want the site. Pick Inku when you want a smaller iPhone review with guided N5-N3 kanji, not a 12,000-kanji catalog.
Verdict
Use Renshuu if you want a free, customizable Japanese platform on web or mobile. Use Inku if you want a calm iPhone flashcard app with a curated catalog and 400+ guided kanji.
Try Renshuu's free tier if you want the broad site. Download Inku if you want the iPhone flashcard path. Confirm Renshuu Pro prices in the store checkout; they vary by platform and region.
How we research this
Every comparison here draws on public product pages, app store listings, and help docs, linked under each section and dated where pricing is involved (last checked September 10, 2026). For full transparency: Inku audio is professionally synthesized rather than human recorded, and we never publish fabricated reviews or ratings. Found an error? Email app@inkujapanese.com and we will fix it.
Common questions
Is Renshuu really free?+
The 2026-09-10 iOS listing says the free version is unlimited and is not gated by a study timer. Optional Renshuu Pro exists (subscription and lifetime in-app purchases). Amounts vary by store and region, so check the current checkout rather than a copied dollar figure.
Which has better Japanese-specific features?+
Renshuu has more breadth: grammar, community lessons, pitch data, and a much larger kanji catalog. Inku has a tighter iPhone flashcard loop and 400+ N5-N3 guided kanji. Different tradeoffs.
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