Music Theory Companion
Music Theory Companion is made and published by PG App Studio. AppBrain is an independent app data site and isn't affiliated with PG App Studio. The app name, icon, screenshots and description belong to PG App Studio and are shown as published on Google Play.
AppBrain's verdict
EstablishedWell rated- Total installs
- 710 thousand
- Rating on Google Play
- 4.43
- 2,457 ratings
- Last updated
- September 29, 2026
Music Theory Companion has 710 thousand installs. Users rate it well: 4.4 stars from 2,457 ratings.
Installs
Tracked by AppBrain- Last 30 days
- 15 thousand
- Per day
- 500
- 30-day average
- Play install range
- 500+ thousand
- Launched
- July 2018
Installs over time
Music Theory Companion has been installed 710 thousand times. Over the past 30 days, it averaged 500 installs per day.
Rankings
Google Play top chartsGoogle Play Rankings for Music Theory Companion
Competitors
Similar apps and more from PG App StudioAlternatives to Music Theory Companion
More from PG App Studio
Releases
Updates seen on Google Play- Version
- 9.0.3
- Launched
- July 2018
User feedback
Ratings and reviews on Google PlayGoogle Play Rating history and histogram
Comments on Music Theory Companion for Android
Technology
Found in the app by AppBrain- Ads
- Contains ads
- Price
- Free
- Libraries
- 19
- App size
- 14.2 MB
- Needs Android
- 7.0+
- Content rating
- Everyone
Technologies used by Music Theory Companion
About the app and developer
About Music Theory Companion
Music Theory Companion is a music & audio app developed by PG App Studio.
Install Statistics
Music Theory Companion has been installed 710 thousand times. In the last 30 days, the app was installed 15 thousand times.
User Ratings
Music Theory Companion is rated 4.43 out of 5 stars. The rating is based on 2.5 thousand ratings.
App Information
Music Theory Companion is freely available from Google Play. The app size is 14.20 MB. The latest version available is 9.0.3. The last update was on September 29, 2026.
Technical Requirements
Music Theory Companion requires Android 7.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since July 2018.
App Performance Report
Get a detailed PDF report for Music Theory Companion with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for PG App Studio
Store listing
By PG App Studio, from Google Play“Music theory, scales, chords, ear training & songwriting tool for all musicians”
Description by PG App Studio Written by the developer, not by AppBrain. Click to read.
🌟 KEY FEATURES:
✅ Scales & Chords: Explore 86 unique heptatonic scales/modes and their diatonic triads/seventh-chord formations. The app has a wide list of scales for guitar, piano and vocal.
✅ Matching Chords: Discover alternative chords for any note in any scale.
✅ Matching Scales: Find alternative scales that can be played with any given scale.
✅ Circle of Fifths: Visualize the circle of fifths for all 86 scales, with options for triads and seventh chords. The circle of fifths tool can be used for finding chord progressions. The app supports both clockwise and anticlockwise directions for the circle of fifths.
✅ Voice Leading: Use the Cube Dance tool for voice leading guidance based on Neo-Riemannian theory.
✅ Chord Library Access a library of 1000+ chords, with chord construction details. This can be used as a chord finder.
✅ Modulations: Explore various chord progression options for smooth key changes.
✅ Scale Practice: Use the pitch detector to practice scales on guitar, piano, or vocals. This app can also be used for vocal training and helps with ear tuning.
✅ Intervals: Train your ear with interval exercises in all keys.
✅ Metronome: Practice with a highly accurate metronome that has configurable sounds. The metronome can be used with guitar, drum set, piano, and vocal practices.
✅ Piano: A realistic piano keyboard with different instrument sounds. This can be used as a piano chords learning app.
✅ Guitar Fretboard: Realistic left-handed and right-handed guitar fretboard display. The app is also a guitar chords app.
✅ Musical Symbols: Quick online reference for musical symbols.
✅ Music Theory Reference: Access a vast collection of online music theory resources, making it a great free music theory book.
✅ Supports both sharp (#) and flat (b) notes for root.
✅ Play guitar chords or piano chords in sync with the metronome ticks.
✅ Has a simple and easy-to-use user interface.
✅ Provides analytical labels such as Secondary Dominant and Secondary Leading-Tone.
✅ Shows compatible scales' chords.
✅ Displays similar and relative scales.
✅ Shows common degrees: Tonic, Supertonic, Mediant, Subdominant, Dominant, Submediant, Leading tone (in Major scale) / Subtonic (in Natural Minor Scale)
✅ Displays compatible chords' scales.
✅ Shows chords and scales on the staff with treble and bass clef.
🎯 APP USAGE:
This app is a complete toolbox for musicians and can be used for:
✅ Music Composing
✅ Music Theory Study
✅ Chord Progressions
✅ Modulation and Key Change
✅ Voice Leading
✅ Guitar and Piano Chord Practice
✅ Vocal Training
✅ Ear Training
✅ Sight reading
🎼 Designed for:
🎹 Pianists & keyboard players
🎶 Musicians, composers, and songwriters
🧠 Music theory learners & teachers
🎓 Students preparing for music exams
🎧 Anyone who loves creating music
The Music Theory Companion app has a realistic piano keyboard and guitar fretboard. It also has a pitch detector.
This app is continuously updated and improved.
COMMUNITY
Follow us on Facebook
https://www.facebook.com/MusicCompanionApp/
Join Our Facebook Group
https://www.facebook.com/groups/MusicCompanionGroup/
Visit Our Website
https://www.pgappstudio.com
Check our YouTube Channel
https://www.youtube.com/@PGAppStudio
Contact Customer Support
pgappstudio@gmail.com
Recent changes:
✓ Improved piano key layout for a more realistic playing experience
✓ Added an option to hide banner ads
✓ Improved user interface
✓ Fixed several bugs