Coban : Japanese Grammar

Name: Coban : Japanese Grammar
Rating: 4.551724 (1029 reviews)
Author: Akira Noguchi

By: Akira Noguchi

Grammar, vocabulary, pronunciation and kanji for JLPT N5.

Features & Capabilities

Coban: Japanese Grammar is a comprehensive Chrome extension designed for learners preparing for the JLPT N5 exam. It offers a combination of basic to advanced grammar tips, over 800 essential vocabulary words, pronunciation aids with audio files, and kanji practice through diverse exercises and interactive tools.

With audio support for all exercises and vocabulary, learners can improve their pronunciation and listening skills effectively. The extension also tracks users' progress on a personalized profile page to motivate continuous learning and mastery of Japanese fundamentals. It is an ideal solution for anyone aiming to pass the JLPT N5 with confidence.

User Growth & Download Statistics

App Education

By:

Akira Noguchi

Downloads:

69,546 141

Rating:

4.55

(1,029) 1 new ratings

Version:

3.1.7 Last updated: 2025-11-26

Version code:

317

Creation date:

2022-07-05

Publisher country:

Permissions:

Manifest.permission.CAPTURE_AUDIO_OUTPUT Very high risk
android.permission.GET_ACCOUNTS Very high risk
android.permission.RECORD_AUDIO Very high risk
android.permission.USE_CREDENTIALS High risk
android.permission.BLUETOOTH Moderate risk
com.google.android.gms.permission.AD_ID Moderate risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.ACCESS_ADSERVICES_TOPICS Low risk
android.permission.FOREGROUND_SERVICE Low risk

Size:

243.89MB

Email:

ni*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-06-25

Compare stats and ranking:

Ranking

# 251,636 ▼ 151

Other platforms

Coban: Learn Japanese (v4.2.2)

4.80

(605)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Akira Noguchi

Google Play Store

https://play.google.com/store/apps/details?id=com.nihongolibrary.japaneseapp

Email:

ni*****@gmail.com

Website:

https://nihongolibrary.com/

User Reviews

Users find this app very helpful for learning Japanese grammar and vocabulary, especially for beginners and JLPT N5/N4 levels. The interface is attractive and user-friendly, aiding self-paced learning. However, many users report excessive and intrusive ads, app crashes, poor audio quality in listening exercises, and limited content availability for free users. Some also mention issues with answer validation during exercises. Despite these drawbacks, the app is appreciated for its educational value and potential for improvement.

Pros

Helps beginners learn Japanese grammar and vocabulary effectively.
User-friendly and attractive interface that makes learning enjoyable.
Good for self-paced learning with well-explained grammar examples.
Useful for JLPT N5 and N4 vocabulary and grammar preparation.
Balanced ad placement appreciated by some users for being non-intrusive.

Cons

Excessive and intrusive ads, especially pop-ups and video ads after every lesson.
App stability issues including auto-closing when changing profile picture and occasional blank screens after lessons.
Poor audio quality in listening exercises with AI voice not clearly separating words.
Lack of sufficient reading exercises and story content for free users, especially at level N4.
Answer validation issues with limited acceptable variations causing frustration during exercises.

Recent reviews

sugoii

Ya*****, 2026-03-13

nice app for new beginners. I suggest use this app

ma*****, 2026-03-10

I really wish folks would return to outright purchasing an app instead of constantly slapping us with more and more subscriptions. I truly hate this timeline.