The app that makes sound visible
Course Fee
Pronunciation coaching at home.
Analyzed by technology.
Reviewed monthly by native instructors.
Enrollment Fee ¥5,000
Annual Plan
¥120,000
（tax included）
Save 2 months
Master 11 vowels in 5 Japanese groups
Rebuild your sound system in 12 months
Monthly pronunciation check
90%+ accuracy in vowel discrimination
Phonemuzu Wordbook +¥1,000/month
Monthly Plan
¥12,000/month
（tax included）
Start with a 1-month trial
Vowel level assessment included
Cancel anytime
Phonemuzu Wordbook +¥1,000/month
5 Services Included
Mastery of Vowels
Separate from the 5 Japanese vowels and visualize sounds.
Pronunciation
Analyze your voice, show native differences.
Phonemuzu Wordbook
1,600 junior high words with My List and weakness tracking.
Growth Record
Diagnosis data storage, monthly progress, final report.
Improvement Report
Ease of understanding evaluated by native speakers
Additional Option
Phonemuzu Flashcard
A new wordbook to learn English vocabulary with correct pronunciation.
・1,600 junior high-level words
・My List feature
・AI tracking and analysis of your learning data
・(AI analysis becomes available as your data builds up.)
※The wordbook can be used on its own, but we recommend using it with the course.
Course Duration
The course is designed to finish in 12 months. If you’d like to continue, you can switch to the monthly plan. After completion, you may use the wordbook on its own.
System Requirements
Browser-Based Web App
This service is a browser-based web application.
No installation is required.
Supported Devices
・Desktop / Laptop
・iPhone / Android smartphones
Supported Browsers
・Google Chrome
・Safari
Requirements for Use
・Google Gmail Account
Required for sign-in.
・Microphone access
Please enable access in your browser settings.
・Internet connection
Stable internet connection recommended.