# OneJPN: Japanese Mastery — Ace the Japanese with Ease

> Learn Japanese for JLPT and Tokutei exams with video lessons and AI practice. (iPhone/iPad app by iSGM.)

- Source: https://appshunter.io/ios/app/onejpn-japanese-mastery/id6476648372 (this page in markdown: same URL + `.md`)
- Developer: [iSGM](https://appshunter.io/developer/1505528204)
- Category: Education
- Price: Free with in-app purchases
- Rating: 4.20/5 from 18 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 147 MB
- Languages: American English
- Released: 2024-04-02
- Data updated: 2026-08-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/onejpn-japanese-mastery/id6476648372/reviews.md

## What is OneJPN?

Master the JLPT and Tokutei with One JPN: Japanese Mastery! 

Stay motivated with engaging video-lessons by V-tuber teachers and improve your Japanese skills with AI-generated questions. Plus, prepare for Tokutei Gino with tailored content to support your career goals in Japan. Download the app now for free and conquer the JLPT and Tokutei Gino! 
 

Why One JPN: Japanese Mastery? 

1. Comprehensive Assessment Test: Wondering where you stand in your Japanese proficiency journey? Our assessment test will pinpoint your strengths and areas for improvement, setting the stage for personalized learning. 
2. Engaging Video-Lessons: Dive into dynamic video-lessons led by fluent V-tuber teachers who make learning Japanese fun and interactive. Whether you're preparing for JLPT or Tokutei, our engaging content will keep you hooked. 
3. Practice, Practice, Practice: Hone your skills in grammar, vocabulary, listening, and reading with practice questions in both test mode and normal mode for JLPT and Tokutei. 
4. AI-Generated JLPT Question Sets: Prepare with AI-generated questions designed to mimic the format and difficulty of the actual JLPT exam. 
5. Tokutei Vocabulary Flashcards: Learn essential Tokutei-specific vocabulary to boost your chances of success in the Tokutei Gino exams. 
6. Tokutei Study Notes: Access detailed study notes tailored to Tokutei Gino, covering critical topics and practical knowledge to ace the exam. 
7. Essential Tips for Japan Lifestyle: Get practical advice on navigating life in Japan, from cultural etiquette to daily living hacks, specifically designed for Tokutei applicants. 

Benefits of One JPN: 

Personalized Learning: Tailored assessment results and customizable practice options adapt to your unique learning needs and pace. 
Engagement and Motivation: Vibrant video-lessons and interactive activities keep you motivated to achieve your goals. 
Confidence Building: Comprehensive study materials and realistic practice questions ensure you're ready for the JLPT and Tokutei exams. 
 
Don’t just study Japanese—master it with One JPN: JLPT Mastery and Tokutei Preparation! 
Download now and start your journey to success in Japan.

## Key features

- Video lessons by V-tuber teachers
- AI-generated practice questions
- JLPT and Tokutei Gino preparation
- Comprehensive assessment test
- Vocabulary flashcards
- Study notes and tips for Japan

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 6 Months | $20.00 | per 6 months |
| 3 Months | $14.00 | per 3 months |
| 1 Year | $30.00 | per year |
| One Month | $5.00 | per month |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/onejpn-japanese-mastery/id6476648372/reviews.md

### 5/5 — Very satisfy with new features and functions !

*2024-07-05*

THE BESG APP IN LEARNING APP . 
The best one is Learning Japanese with Cute&Beautiful Vtuber Sensei !

### 5/5 — Good for JLPT exam preparation

*2024-05-08*

Love the features and functions app provided.

### 3/5 — App review

*2024-05-07*

Easy & convenient to use! Need more Levels asap.

### 5/5 — Awesome App

*2024-04-02*

OneJPN - JLPT study app is an excellent tool for anyone preparing for the Japanese Language Proficiency Test. It offers a comprehensive study plan, user-friendly interface, clear explanations of grammar points and vocabulary, as well as practice tests and mock exams to track progress. The app focuses on real-life scenarios and practical language use, helping users build fluency and confidence. I highly recommend it to anyone looking for a reliable and effective study tool.

## Frequently asked questions about OneJPN

### What is the learning methodology of OneJPN?

OneJPN uses a blended learning approach with engaging video lessons led by V-tuber teachers and AI-generated practice questions. It also offers personalized learning paths based on an initial assessment test to identify strengths and areas for improvement.

### How does OneJPN track user progress?

The app provides a comprehensive assessment test to pinpoint proficiency levels and offers practice questions in both test and normal modes. This allows users to monitor their improvement in grammar, vocabulary, listening, and reading skills.

### Does OneJPN offer any certifications?

While OneJPN focuses on preparing users for official exams like the JLPT and Tokutei Gino, it does not issue its own certifications. Success in the app's practice modules aims to build confidence for passing these external examinations.

### What are the subscription plans for OneJPN?

OneJPN offers several subscription tiers: One Month for $5.00, 3 Months for $14.00, 6 Months for $20.00, and 1 Year for $30.00. These plans provide access to premium features and content.

### Is OneJPN suitable for beginners?

Yes, OneJPN is designed to cater to learners preparing for exams like JLPT and Tokutei Gino, which often start from foundational levels. The comprehensive assessment and varied practice modes can help beginners gauge their starting point.

### What devices does OneJPN support?

OneJPN is available on iPhone and iPod devices, allowing users to study Japanese on the go. The app is designed for mobile learning experiences.

### How often is OneJPN updated?

The latest version of OneJPN is 3.2.0, and it was last updated on December 12, 2025. This indicates regular updates to improve features and content.

### What is the age rating for OneJPN?

OneJPN has an age rating of 4+, making it suitable for a wide range of users. This rating suggests that the content is generally appropriate for younger learners as well as adults.

## Version history (last 5 releases)

### 3.2.0 — 2025-12-12

- Bug fixes from versions 3.1.0
- Improve screen transitions
- Some minor issues fixed

### 3.1.0 — 2025-09-20

- Bug fixes from v3.0.0
- Updated mogi test result UI
- Vocabulary filter in flashcard

### 3.0.0 — 2025-06-18

- Bug fixes from v2.5.0
- Dictionary 
- Flashcard theme customization
- Notification and study reminder

### 2.5.0 — 2025-03-26

- Minor UI fixes
- Remove some banner ads
- Payment module included

### 2.4.0 — 2025-02-07

- New UI improvements
- Bug fixes from v2.3.0
- System theme feature

## More apps by iSGM

- [iHRMS Mobile](https://appshunter.io/ios/app/ihrms-mobile/id1505528205)
- [GED Credit](https://appshunter.io/ios/app/ged-credit/id6535668060)

All apps by iSGM: https://appshunter.io/developer/1505528204

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*