iChanges - Jazz Chord Trainer

Learn Jazz Harmony by Playing

$3.99

Train chord tones, target notes and real jazz changes directly on your instrument. Build harmonic freedom with focused exercises, song practice and real-time feedback. 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.

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**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

Version 1.3

The developer, Klaus Storck, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Klaus Storck
    Size
    • 7.1 MB
    Category
    • Music
    Compatibility
    Requires iOS 13.0 or later.
    • iPhone
      Requires iOS 13.0 or later.
    • iPad
      Requires iPadOS 13.0 or later.
    • iPod touch
      Requires iOS 13.0 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • Copyright © 2026 Klaus Storck. All rights reserved.
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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