# Harmonize: Ear Trainer & Pitch

> Ear training games: intervals, chords, rhythm, play by ear. 14 games, free.

Canonical page: [https://chrome-stats.com/d/com.apppppp.harmonize](https://chrome-stats.com/d/com.apppppp.harmonize)

## Overview

- **ID:** `com.apppppp.harmonize`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Toshihiko Arai
- **Category:** GAME\_MUSIC
- **Downloads:** 61,513
- **Rating:** 4.20 / 5 (567 ratings)
- **Version:** 26.9.3
- **Last updated:** 2026-09-03
- **First published:** 2017-01-06
- **Publisher country:** JP
- **Size:** 38 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.apppppp.harmonize)
- **Website:** [https://araisun.com/apps/harmonize/](https://araisun.com/apps/harmonize/)
- **Privacy policy:** [https://s.araisun.com/harmonize-privacy-policy.html](https://s.araisun.com/harmonize-privacy-policy.html)

## Description

Pitch Trainer - Harmonize is a unique ear training Chrome extension designed to help users develop perfect and relative pitch through just intonation. Ideal for music students, orchestra members, brass bands, and karaoke enthusiasts, this app focuses on the nuanced learning of double-stop notes using just intonation principles.

Unlike equal temperament, this extension calculates intervals based on precise frequency ratios, allowing learners to experience true harmonic consonance. Sounds are played simultaneously, encouraging users to match tones by ear and recognize the clarity of just intervals. The app comes with a reference tone of A=442 Hz and serves as both an educational tool and a fun music game to enhance auditory skills and musical harmony understanding.

## Rankings

- #273,679 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.RECORD_AUDIO`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.apppppp.harmonize.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Users appreciate Pitch Trainer for its effective ear training, especially in just intonation, and its straightforward, engaging approach to tuning and intervals. It is praised for helping musicians build confidence in pitch recognition. However, recurring complaints include intrusive ads after every short game, lack of customization settings, confusing instructions, and missing features compared to the iOS version. Some users find it hard to isolate notes due to overpowering overtones and desire more advanced interval options and chord training capabilities.

### Pros

- Very effective for ear training and developing pitch recognition, especially with just intonation.
- Good range of levels and exercises that help improve interval recognition and tuning skills.
- Simple and straightforward user interface, making it accessible to a wide range of users and musicians.
- Helpful for musicians of various backgrounds, including string players and vocalists, to fine-tune their ears.
- App provides a unique and challenging way to practice pitch and harmonic intervals, promoting confident listening skills.

### Cons

- Presence of frequent and intrusive ads after each short game, disrupting the learning experience and making it difficult to review results.
- Lack of settings and customization options, such as the ability to adjust intervals, change default sounds, or toggle sound effects like applause and trombone noises.
- Some confusion due to poor or incomplete instructions and occasional translation issues.
- Missing features compared to the iOS version, including playing notes separately and options for temperament tuning such as equal temperament.
- Difficulty distinguishing notes because overtones can be louder than fundamentals, which can hinder tuning accuracy.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.apppppp.harmonize)