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Kaeru - Learn Japanese & Kanji

Kaeru - Learn Japanese & Kanji

JLPT N5-N1, SRS & Handwriting

22 ratings
12 reviews
📚 Education
🔧 Utilities
Free
In-App Purchases

Details

  • Released
  • Updated
  • December 29, 2025
  • July 9, 2026

Developer

Rozemyne Ltd
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About

Master Japanese writing, grammar, and pronunciation with a comprehensive learning tool. Practice kanji stroke by stroke, understand grammar patterns with context, and improve your speaking with AI feedback. Daily stories and a built-in dictionary provide real-world application.

✓Kanji handwriting practice with stroke order
✓Comprehensive grammar explanations (N5-N1)
✓Adaptive spaced repetition system (SRS)
✓Daily Japanese stories with audio and quizzes
✓AI-powered pronunciation scoring
✓JLPT level-specific study decks
✓Integrated Japanese dictionary
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What's New in Kaeru

1.5.2

July 9, 2026

Performance and stability improvements

Subscription plans

Kaeru Plus: Annual

Boost your language learning journey for whole year!

$89.991 Year
3 Days trial
Price Updates
July 23, 2026→$89.99
May 3, 2026→$79.99
February 28, 2026→$69.99
How to cancel Kaeru subscription ⁉️
4

In-App Purchases

$299.99

Kaeru Pay Once

No subscriptions. Simple as it is.

User reviews

Most RecentHighest RatedLowest Rated

Poor Functionality

I was happy to try the app for a bit and it was working fine but now whenever I open it, it hangs on the kanji loading page. I deleted the app and reinstalled, same issues. Consistent across my iPhone and iPad. It’s a shame.
PleyfightPleyfight

Response from developer

Thanks for the thoughtful feedback - sorry the kanji loading page is hanging on both your iPhone and iPad. That's not expected, especially after a reinstall. Could you email support@kaeru-jp.app so we can dig into it? Your iOS version and any error details would really help us track down the cause. 🙏

UI leaves a lot to be desired

The app has a clean interface making you think it’s easy to use but far from it. If you want to just use it as a review before you dive into your exact it’s tedious since it makes you record the word without the ability to just automatically swipe and if you skip it makes it seem like you don’t know the word. There’s no easy access to review JLPT material but rather everything is scattered across decks in one location. Organization feels sloppy despite the clean looking interface. Feels like a trick
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killuawattskilluawatts

Response from developer

Thanks for the thoughtful feedback. Sorry the review flow and deck organization feel clunky — the "skip vs. don't know" distinction and scattered JLPT material are fair points we're weighing. If you email support@kaeru-jp.app with how you'd like to review, it really helps us prioritize. 🙏

Not great

This app is kinda confusing, it doesn’t give the Japanese translation for the kanji and just wants you to practice the stroke order which I personally don’t find necessary. And the kanji flashcards also don’t show the Japanese translation. The pronunciation part is also not really useful - perhaps if you’re doing N5 but not after that. It doesn’t seem to intro grammar either ?
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Madzz88Madzz88

Response from developer

Thanks for the detailed feedback. A couple of clarifications that might help: the kanji flashcards do show the English meaning — just tap the card to flip it. In the Daily Journey we deliberately focus on stroke order and meaning rather than showing a kanji's Japanese reading, because a single kanji usually has multiple readings that change depending on the word it appears in — so teaching one reading in isolation tends to mislead more than help. If you do want to study readings, the Library has precompiled kanji decks with reading previews, and you can also build your own deck from the specific kanji you want to focus on. Grammar is introduced gradually through the Daily Journey, with a more comprehensive grammar section in the Library whenever you want to go deeper. Hope that points you in the right direction!

Scam

App has no real free trial period and forces you to cash in right away after setting up profile. Tiring, unprofessional and just a money grab.
KantanSanKantanSan

Response from developer

Thanks for the feedback. We understand that this setup can feel frustrating 🙏 We offer a free trial so users can try the app before paying. On the App Store, Apple may still require a payment method to activate the trial — this is handled by Apple, and we never receive your payment details.

Review

The app is great!! Straight to the point and works pretty fast

My favorite is the fact that the app does not attack you with notifications the way DuoLingo does
JennSH2001JennSH2001

Response from developer

Thank you for your feedback! We are happy that you like Kaeru. If you have any questions or suggestions please send us a word on support@kaeru-jp.app

See 7 more reviews

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FAQ

What is Kaeru's learning methodology?

Kaeru focuses on active recall for kanji by having users write characters stroke by stroke. Grammar is learned through contextual examples and formation rules, while pronunciation is honed with AI feedback. The app uses an adaptive SRS to schedule reviews based on user performance.

Does Kaeru offer progress tracking?

Yes, Kaeru tracks your progress toward specific JLPT levels (N5 through N1) for both kanji and vocabulary. This helps ensure your study hours are focused and count towards your target exam.

What are the subscription options for Kaeru?

Kaeru offers weekly, monthly, and annual subscription plans. The annual plan includes a 3-day free trial. Pricing details are available within the app.

Can I use Kaeru offline?

The provided data does not specify offline functionality. However, features like daily stories and AI pronunciation scoring may require an internet connection.

How does Kaeru's SRS differ from other apps?

Kaeru's SRS adapts to your memory for each item, scheduling reviews before you forget. It adjusts to missed days rather than overwhelming users with a large backlog of reviews, aiming to maintain motivation.

What devices does Kaeru support?

Kaeru is available on iPhone and iPad. Apple Pencil can be used on iPads for a kanji notebook experience.

Does Kaeru have ads?

Yes, Kaeru contains advertisements. As a free app with in-app purchases, ads are part of the user experience.

How often is Kaeru updated?

The latest version of Kaeru is 1.4.8, last updated on May 6, 2026. This indicates a relatively frequent update schedule, ensuring the app remains current.