# Scale, Chord Progressions

> Music Theory, Piano Chord, Guitar Chord, Scales, Circle of 5, Chord Progressions

Canonical page: [https://chrome-stats.com/d/com.own.pcomposer](https://chrome-stats.com/d/com.own.pcomposer)

## Overview

- **ID:** `com.own.pcomposer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** Raul Reyes
- **Category:** MUSIC\_AND\_AUDIO
- **Downloads:** 328,039
- **Rating:** 4.65 / 5 (1,110 ratings)
- **Version:** Billing\_test
- **Last updated:** 2024-08-07
- **First published:** 2021-10-31
- **Size:** 72 MB
- **Data as of:** 2025-08-27
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.own.pcomposer)
- **Privacy policy:** [https://ygtorres.github.io/privacy\_policy.htm](https://ygtorres.github.io/privacy_policy.htm)

## Description

Pocket Composer is a versatile Chrome extension designed for musicians, composers, and music students seeking a portable and comprehensive music theory tool. Built on Berklee College of Music's teachings, it offers an extensive dictionary of all piano and stringed instrument chords, scales, and their variations across Western music. The app supports instruments with 3 to 10 strings and various tunings.

Key features include an intuitive chord progression builder, extended chord wheel incorporating advanced harmony functions, and detailed chord-scale theory to aid composition and learning. Its portability allows users to create and modify music anywhere, even without access to their instruments. Multiple key notations and support for various clefs make this a thorough resource for music theory and songwriting. Download Pocket Composer to enhance your musical creativity and understanding anywhere you go!

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.own.pcomposer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

### Pros

- Innovative and intuitive user interface
- Comprehensive tool for music composition and learning
- Valuable support from the developer
- Offers a vast range of features including chord progressions and scale finders
- Highly regarded by musicians who need help with music theory

### Cons

- Complicated interface that can be difficult to navigate
- Frequent crashing issues reported associated with certain devices
- Some core functionalities require a paid subscription to access
- Limited help resources, with some instructional videos only available in Spanish
- Certain users experience frustration with saving progress and the app's touch sensitivity

## Similar extensions and apps

- [Piano Chords, Scales Companion](https://chrome-stats.com/d/com.binitex.pianochords) — 2,824,811 users, 4.72 / 5
- [Music Theory Companion](https://chrome-stats.com/d/app.pg.scalechordprogression) — 683,721 users, 4.40 / 5
- [Piano Chords Companion PRO](https://chrome-stats.com/d/com.binitex.pianocompanion) — 18,349 users, 4.78 / 5
- [Music Theory Tools: Music Guru](https://chrome-stats.com/d/com.scales.scaleheaven) — 23,543 users, 4.13 / 5
- [Piano Chords and Scales Pro](https://chrome-stats.com/d/com.sincereapps.casa.pro) — 865 users
- [Pocket Music Theory](https://chrome-stats.com/d/com.magnaursa.pocketmusictheory) — 1,059 users
- [Piano Chords and Scales](https://chrome-stats.com/d/com.sincereapps.casa.free) — 1,104,214 users, 4.02 / 5
- [Chordly: Escalas](https://chrome-stats.com/d/com.app.chordly) — 6 users
- [BComposer Scales](https://chrome-stats.com/d/com.ombstudios.bcomposer.scales) — 41,063 users, 4.22 / 5
- [Chords and Scales Finder](https://chrome-stats.com/d/com.candsfinder.chord_and_scale_finder) — 41 users
- [Circle of Fifths Auto](https://chrome-stats.com/d/com.maikstrings.circle_of_fifths_auto) — 540 users
- [Musical Chord - Music Theory](https://chrome-stats.com/d/com.harmonicear) — 47,501 users, 4.67 / 5

---

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