# iChanges - Jazz Chord Trainer — Learn Jazz Harmony by Playing

> Learn Jazz Harmony by Playing (iPhone/iPad app by Klaus Storck.)

- Source: https://appshunter.io/ios/app/ichanges-jazz-chord-trainer/id6774789414 (this page in markdown: same URL + `.md`)
- Developer: [Klaus Storck](https://appshunter.io/developer/6774789416)
- Category: Music, Education
- Price: $3.99
- Age rating: 4+
- Requires: iOS 13.0 · 6 MB
- Languages: American English
- Released: 2026-06-07
- Data updated: 2026-09-14
- User reviews in markdown: https://appshunter.io/ios/app/ichanges-jazz-chord-trainer/id6774789414/reviews.md

## What is iChanges?

Master jazz harmony directly on your instrument.

iChanges helps jazz musicians train chord tones, target notes and jazz changes through active playing instead of pure theory.

Use your trumpet, saxophone, piano, guitar or any melodic instrument with real-time pitch detection, or practice silently with the built-in keyboard.

Features:
• Real-time pitch detection using your microphone
• Built-in piano keyboard for silent practice
• 15 chord types including Maj7, Min7, Dom7, Alt7, Half-Diminished and more
• All 12 keys supported
• Transposition for C, Bb, Eb, F and G instruments
• Random practice mode
• Song mode with MusicXML import
• Adjustable tempo and chord duration
• Practice chord tones, tensions and alterations
• Select specific target notes or train randomly
• Local progress tracking and statistics
• 14-day learning history

Whether you are learning your first ii-V-I progression or refining altered dominant vocabulary, iChanges provides focused, practical training designed for real musicians.

No account required.
No subscriptions.
No ads.


## Version history (last 5 releases)

### 1.4 — 2026-09-08

Guided tour for new users  
Volume adjustments for Bluetooth playback  
Reduced Bluetooth playback latency

### 1.3 — 2026-07-19

**What’s New**

* Improved Swing and Bossa playback with more natural piano, bass and drum patterns
* Better-balanced sound and higher overall playback volume
* More open and musical piano voicings
* More stable audio start and sample loading
* Refined Song Mode accompaniment
* Various performance improvements and bug fixes

### 1.2 — 2026-07-01

Complete redesign with tab navigation, 6 languages, improved audio engine, and Rhythm Changes.

### 1.1 — 2026-06-10

Bug fix: Microphone access for pitch detection

### 1.0 — 2026-06-07

No release notes.

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| --- | --- | --- | --- |
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| [Jazz Progression Trainer](https://appshunter.io/ios/app/jazz-progression-trainer/id6761685294) | — | $2.99 | Music |
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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 2026-09-14.*