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Kaeru - Learn Japanese & Kanji

Kaeru - Learn Japanese & Kanji

JLPT N5-N1, SRS & Handwriting

29 ratings
18 reviews
📚 Education
🔧 Utilities
Free
In-App Purchases

Details

  • Released
  • Updated
  • December 29, 2025
  • July 21, 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

1.5.3

July 21, 2026

Performance improvements and bug fixes

Subscription plans

Kaeru Plus: Annual

Boost your language learning journey for whole year!

$89.991 Year
3 Days trial
Price Updates
August 28, 2026→$89.99
May 3, 2026→$79.99
February 28, 2026→$69.99
How to cancel Kaeru subscription ⁉️
1

In-App Purchases

$299.99

Kaeru Pay Once

No subscriptions. Simple as it is.

User reviews

Most RecentHighest RatedLowest Rated

Hard to use

Using the paid version. Frustrating to use as this app doesn't help with reviewing the words learned and simply keeps repeating the same Kanji
great_scorpiongreat_scorpion

I wanted to love this app

Has some potential, but the daily exercises have some inaccuracies that shouldn’t be there and the vocab training with kanji acts very strangely. Some cards have just a kanji and no associated task or prompt. The English translations are off and the voice readings are also frequently different than what’s written. And some sentences don’t make sense in Japanese or English. I also get annoyed by constantly being rated at 80% in pronunciation when my individual scores during the test are above 90%. I’m glad I only got a month subscription. Going back to Bunpo and Wanikani.
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MatzaballMatzaball

Needs a free trial

App requires a subscription before accessing any content. There are too many (bad and good) of these language learning apps for me to blindly throw money at one.
Chanfrein1Chanfrein1

Response from developer

Thanks for the feedback - totally fair point with so many apps out there. Good news: we do offer a free trial so you can try before committing, and you can cancel anytime during it. If you hit a paywall without the trial option, email support@kaeru-jp.app and we'll help sort it out. We know this model is not suitable for everyone, but if you would like to explore more please hit us up and our support team will try to come up with solution ☺️

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. 🙏

See 13 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.