Report updated Apr 21, 2026

Overview · Full Intel report in progress

Kanji Book is an established education app that is completely free. With a 4.7/5 rating from 92 reviews, it shows polarized user reception.

What is Kanji Book?

Kanji Book is an educational tool designed to help users master the 2136 jōyō kanji through a personalized, self-paced workbook experience. The app utilizes a visual progress-tracking system inspired by Japanese journals to encourage consistent, short-burst study sessions.

Current Momentum

v1.37 · 54mo ago

Zombie

Last updated 1623d ago. 5 versions tracked.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Education

No ranking data

Rating Pulse 🇺🇸

What makes this app unique?

What Does It Look Like?

What Are The Key Features?

Visual Progress TrackingStandard

Users build a personalized workbook that tracks their kanji acquisition through a visual interface.

Comprehensive Practice ModesStandard

Supports study across multiple dimensions including readings, drawing, recall, definition, and recollection.

Adaptive Language InterfaceStandard

The workbook's language evolves to reflect the user's growing knowledge of kanji.

Flexible Testing OptionsStandard

Offers both simple flashcard functionality and a 25-question random testing mode.

Compound Vocabulary GridsStandard

Sessions conclude with a grid of compound kanji words once the user has acquired sufficient foundational characters.

How much does it cost?

Free

Who Built It?

Bird Cartel LLC app icon 1
Bird Cartel LLC app icon 2
Bird Cartel LLC app icon 3
Bird Cartel LLC app icon 4

Bird Cartel

(136.4K)

Developing minimalist word puzzles, Japanese language tools, and thematic card games for users seeking focused, aesthetic mobile experiences.

Portfolio

6

Apps

Free 4Paid 1
Games60%
Utilities20%
Education20%

Explore the full Bird Cartel report

Portfolio breakdown, audience, momentum, and every app published by Bird Cartel.

Go deeper

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

View the full user-sentiment analysis

Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.

Go deeper

Analysis in progress, available soon

What is the competitive landscape for Kanji Book?

How's The Education Market?

Market outlook for this category

Available very soon

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for Kanji Book

Key Takeaways

Kanji Book focuses on low-friction, frequent study sessions to help users systematically learn the jōyō kanji.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Kanji Book, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Kanji Book Intelligence Report.” Updated Apr 21, 2026. https://marlvel.ai/apps/kanji-book

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