Know The Changes: Jazz Chords

Memorize Jazz Standards

$1.99 · Designed for iPad. Not verified for macOS.

You can play it with the chart. Can you play it without? Hide the chords bar by bar until you can rebuild the whole tune from memory. You can play a standard perfectly well while reading it. Then someone calls it at a jam, the chart is gone, and you're not sure what happens in the bridge. Know the Changes takes the safety net away gradually, so the changes move out of the chart and into your memory. How it works • Study the full chart • Hide 25%, 50%, 75% or every chord • Fill in the missing bars from a set of choices • Check each section, then work through the whole form • Switch keys to find out whether you know the harmony or just a sequence of chord names Learn the version you actually play Share a song or playlist from iReal Pro and open it directly in the app. Musicians disagree about changes, so you should be practicing your version. Or start right away with the built-in library of jazz standards. Different every session Hidden bars change each time, so you can't get by memorizing the pattern. One job, done well No melodies, licks or solos, and it isn't a jazz course. It does one thing: recall. Family Sharing supported. No data collected. Know the changes. Leave the chart behind. Know the Changes is not affiliated with or endorsed by iReal Pro.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Updating store description only

Version 1.1.2

The developer, Joe Gass, 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
    Joe Gass
    Size
    4.2 MB
    Category
    Music
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 NerdBoy Software
  • Privacy Policy

    • Supports

    • Family Sharing

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

    More by Joe Gass