# Know The Changes: Jazz Chords — Memorize Jazz Standards

> Memorize Jazz Standards (iPhone/iPad app by Joe Gass.)

- Source: https://appshunter.io/ios/app/know-the-changes-jazz-chords/id6804006050 (this page in markdown: same URL + `.md`)
- Developer: [Joe Gass](https://appshunter.io/developer/6802367632)
- Category: Music, Education
- Price: $1.99
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English
- Released: 2026-08-25
- Data updated: 2026-10-24

## What is Know The Changes?

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.

## Is Know The Changes safe?

Not enough ratings yet to assess Know The Changes.

## Is Know The Changes legit?

Know The Changes: Jazz Chords appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Know The Changes is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.1.2 — 2026-09-24

Updating store description only

### 1.1.1 — 2026-09-04

Practice sessions now vary which bars get hidden each time, so you can't just memorise the pattern. Also fixes a bug where some charts got split into awkward one-bar sections.

### 1.1 — 2026-08-27

Consolidated the bundled song library into a focused set of trad-jazz standards, and cleaned up a few chord-display glitches along the way.

### 1.0 — 2026-08-25

No release notes.

## More apps by Joe Gass

- [Walking Bass Trainer](https://appshunter.io/ios/app/walking-bass-trainer/id6802367630)
- [SoundPad+ Soundboard](https://appshunter.io/ios/app/soundpad-plus-soundboard/id6808341808)
- [LoopBook: Practice Clips](https://appshunter.io/ios/app/loopbook-practice-clips/id6809137125)

All apps by Joe Gass: https://appshunter.io/developer/6802367632

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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 2026-10-24.*