Nice way to learn music on the go
This is a lot of fun. I am having fun exploring the songbook and trying all of them out.
Response from developer
Thank you! So happy you liked it!
Free
In-App Purchases
About
Jam on piano with an adaptive backing band that follows your chord charts. Explore musical ideas, practice improvisation, and analyze your playing patterns over time. Connect a MIDI keyboard or use the on-screen option for a flexible practice experience.
✓Adaptive backing band following chord charts
✓On-screen and MIDI keyboard support
✓Playing statistics and pattern analysis
✓Offline functionality
✓Customizable backing styles and tempo
✓Chord chart import and editing
Show original description
What's New in Piano Backing Band
1.6
October 9, 2026
- Easier start for beginners
1
Subscriptions & In-App Purchases
$12.99
Unlock Pro
Edit chords, backing style, key, create/import/export
User reviews
Developer apps
FAQ
What is ChartKeys?
ChartKeys is a music practice application that provides an adaptive backing band to accompany your piano playing based on chord charts. It allows you to jam, practice improvisation, and analyze your playing patterns.
Does ChartKeys have ads?
No, ChartKeys does not contain advertisements. The app is free to use with optional one-time purchases for Pro features.
What are the Pro features in ChartKeys?
The one-time Pro purchase unlocks features such as changing backing styles, transposing songs, editing chords directly, creating custom chord charts, and importing/exporting chord charts.
Can I use ChartKeys offline?
Yes, ChartKeys works offline. Your playing data and all app functionalities are stored on your device, and no account or sign-up is required.
What devices does ChartKeys support?
ChartKeys is supported on iPhone and iPad devices, running on iOS.
How often is ChartKeys updated?
The app was last updated on September 9, 2026, with version 1.0.1. Future updates will likely continue to refine features and add content.
What is the age rating for ChartKeys?
ChartKeys has an age rating of 4+, making it suitable for a wide range of users interested in music practice.
How does ChartKeys analyze my playing?
ChartKeys listens to your playing and provides statistics on common chords, intervals, and musical phrases. It also shows where you land on chord changes during solos and maps your keys to the circle of fifths.
