Scale, Chord Progressions

In-app purchases
4.6
734 reviews
100K+
Downloads
Content rating
Everyone
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About this app

“Pocket Composer: Your Personal Music Theory Assistant” is a tool designed for anyone with an interest in music, from professional composers to music students and enthusiasts. Built on the foundation of Berklee College of Music’s theory teachings, this app serves as your personal guide to studying music theory. Whether you’re a songwriter working on a composition or just someone who loves music, Pocket Composer is here to assist you. It’s like having a music theory class right in your pocket!

Pocket Composer provides a comprehensive dictionary of all existing chords and scales in western music for piano and stringed instruments. It now supports every stringed instrument with a fretboard, allowing you to apply any tuning to an instrument with 3 to 10 strings.

The app features a search function for stringed chords, ranging from easy to hardest to play. A reference bar helps you identify which fingering positions are easier to play.

Pocket Composer includes a compact chord progression builder. This tool helps you create progressions and songs in places where you can’t take your instrument. The beauty of this feature is its portability. Imagine you’re traveling, or in a situation where you don’t have access to your musical instrument or don’t have enough theoretical knowledge. With the chord progression builder, you can continue to create music right on your device. You can design and modify chord progressions, essentially composing music, no matter where you are. It’s like having a portable, pocket-sized music studio! This can be incredibly useful for musicians, helping them to compose and practice even when they can’t physically play their instrument.

We’ve added a new harmony tool that applies dominant and subdominant harmony functions over all existing chords. The app features a chord wheel that extends the circle of fifths functionality. This allows you to harmonize all scales and even apply harmony functions such as secondary dominant, secondary leading tones, secondary subdominant, etc. This feature helps you compose songs and learn to play chords and scales.

You can easily find out the name of a scale and the symbol of a chord by playing the instrument. You can also learn many other different chord symbols.

Main features include:

All existing piano and stringed instrument chords in western music, with their inversions and different voicings.
All existing scales in western music and many of their different names.
Extended chord Wheel and Circle of Fifths.
Compact song and chord progression builder.
Tool for applying harmony functions to any chord.
List of all available chords in scales grouped by number of notes.
Many different key notations: English, Spanish, Italian, German, Japanese, Russian, Chinese, numerical, etc.
Chord-Scale Theory to learn how to apply scales over single chords.
Chord voicings and inversions.
Scales on the staff with many different clefs.
Download Pocket Composer today and start your musical journey!"
Updated on
Apr 12, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.6
698 reviews
Luke S
August 18, 2023
I bought the lifetime version and don't regret it. It's so easy to experiment with different chords, qualities and voicings and then save something into a progression to work on later. The circle of fifths view along with the keyboard and fretboard views are particularly useful in bridging the gap between the theory and practice. It's good for training your ears too. It really cemented a lot of things for me.
34 people found this review helpful
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Raul Reyes
September 11, 2023
Thank you for downloading our app! We will keep working on it!
Stephen Meiers
December 8, 2022
EXCEPTIONAL, OUTSTANDING! Regarding the feature set, extremely elegant UI, and training videos, I am quite impressed. The ability to drag in the circle of fifths to change keys is VERY COOL! So many other nice touches, too. Nice example progressions also. I haven't even gotten into the settings for the various instruments. I'm basically blown away at the sheer beauty of this music arrangement and theory training app. Very well done!
64 people found this review helpful
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Raul Reyes
December 18, 2022
Thank you very much for your 5-star review!!!
Shaun Reich
March 8, 2023
This app is lovely. I bought the lifetime version, please keep updating this... It's got an excellent design, very thorough and detailed, it is really teaching me more about music. And the free version never nagged me. These are all factors of a great app. The UI skin feels clean too, and overall really great, I look forward to the improvements of it.
34 people found this review helpful
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Raul Reyes
September 11, 2023
Thanks for your kind feedback. We would consider it seriously in future updates. If you have any suggestions or questions, please feel free to contact us at composer.assistant.feedback@gmail.com.

What's new

Thanks for using Pocker Composer! This release brings bug fixes that improve the usability of the app.
We have added new voicing for the piano.
We have added new R&B styles and improved some instruments.