# Piano Backing Band – ChartKeys — Jam Tracks & Chord Practice

> Piano practice app with adaptive backing band and playing analysis. (iPhone/iPad app by Valentyn Danylchuk.)

- Source: https://appshunter.io/ios/app/piano-backing-band-chartkeys/id6801217773 (this page in markdown: same URL + `.md`)
- Developer: [Valentyn Danylchuk](https://appshunter.io/developer/633196070)
- Category: Music, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 58 MB
- Languages: American English, Arabic, Dutch, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Polish and 10 more
- Released: 2026-09-01
- Data updated: 2026-10-20
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/piano-backing-band-chartkeys/id6801217773/reviews.md

## What is Piano Backing Band?

Jam on piano with a backing band that follows your chord chart. Explore ideas, practice improvisation, or just enjoy playing — then discover patterns in your playing over time.

Start free with 20 demo loops, drums, bass, and keys/guitar accompaniment. Play with the onscreen keyboard or connect a MIDI keyboard, wired or over Bluetooth.

ChartKeys is for players who know basic chords and want room to explore. Follow your curiosity, with no study plan, tests, or scores.

The free version includes all 20 demo loops, backing playback, tempo and mixer controls, and full playing statistics, with no time limit. A one-time Pro purchase unlocks chart import, chord editing, transposition, and backing-style changes.

No account or sign-up. Works offline. Your playing stays on your device.

* Jam along with an auto backing band, based only on chords and style
- 20 bundled demo loops
- three-lane backing band: drums, bass, keys/guitar
- backing styles including pop, rock, jazz/swing, bossa, funk/soul, waltz, shuffle, etc.
- adjust tempo as you like (50-150%, the band replays it, no time-stretched weirdness)
- adjust your loudness relative to the band as you like
- mute each backing instrument as you please
- choose your instrument: Grand Piano, E-Piano x2, Clavinet, Drawbar Organ, Accordion, Synth Lead
- chords lane follows the beat
- optional chord keys highlighting
- onscreen keyboard or MIDI (wired/Bluetooth)

* ChartKeys listens to what you play, and roots for you!
- daily activity chart, daily streaks, optional reminders
- statistics over time on your common chords, intervals
- detects your commonly used musical phrases/lines across songs
- shows where you land on chord changes in solos (root, 3rd, 5th, 7th, etc.)
- the keys you play in, laid out on the circle of fifths
- describes your journey, never judges: no scores, no verdicts, no red crosses
- share your stats conveniently as images if that seems fun or useful

* Everything in one songbook
- demo loops, imported playlists and your own loops, with search and favorites

* No account, no sign-up, no cloud
- what you play stays on your device
- nothing personally identifying is ever uploaded, not even an install id
- works offline

* Play the free version as long as you like
- 20 demo loops, full backing, full player stats, play controls included with no limit

* Unlock lifetime Pro features with a one-time payment
- change backing style for any song
- change song key (transpose)
- edit chords (tap and hold directly in the chords lane)
- create your own chord charts (basic editor, up to 16 bars, fixed grid of chords to edit)
- import thousands of chord charts available online via copy-paste (irealb:// compatible)
- export your chord charts via copy-paste

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock Pro | $12.99 | one-time |


## Is Piano Backing Band safe?

Not enough ratings yet to assess Piano Backing Band.

## Is Piano Backing Band legit?

Piano Backing Band – ChartKeys appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Piano Backing Band is 68 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/piano-backing-band-chartkeys/id6801217773/reviews.md

### 5/5 — Nice way to learn music on the go

*2026-09-11*

This is a lot of fun. I am having fun exploring the songbook and trying all of them out.

**Developer response:** Thank you! So happy you liked it!

## Frequently asked questions about Piano Backing Band

### 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.

## Version history (last 5 releases)

### 1.6 — 2026-10-09

- Easier start for beginners

### 1.5 — 2026-10-05

- Easier start for beginners
- Tap metronome to reset tempo

### 1.4 — 2026-10-03

- Easier start for beginners.

### 1.3 — 2026-10-01

- Added Accordion keys sound preset.
- Added optional note labels: C4, D4, E4, etc.

### 1.2 — 2026-09-28

Added visual effects pulsing to the rhythm you play.

## Apps similar to Piano Backing Band

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## More apps by Valentyn Danylchuk

- [Rainbow Land](https://appshunter.io/ios/app/rainbow-land/id633195967)

All apps by Valentyn Danylchuk: https://appshunter.io/developer/633196070

## Related topics

[piano band](https://appshunter.io/ios/topics/piano-band)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-20.*