# iImprov-Chord/Scale Compendium > Visual and audio reference for jazz improvisation scales and chords. (iPhone/iPad app by Jazz Apps Mobile LLC.) - Source: https://appshunter.io/ios/app/iimprov-chordscale-compendium/id453639147 (this page in markdown: same URL + `.md`) - Developer: [Jazz Apps Mobile LLC](https://appshunter.io/developer/421582808) - Category: Music, Education - Price: $0.99 - Rating: 3.70/5 from 23 App Store ratings · 17 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 12 MB - Languages: American English - Released: 2011-08-04 - Data updated: 2026-08-01 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/iimprov-chordscale-compendium/id453639147/reviews.md ## What is iImprov? iImprov - Chord/Scale Compendium Overview The iImprov - Chord/Scale Compendium is an easy to use reference app that provides a visual and audio representation of the most useful scale to chord choices for jazz improvisation. In addition to being a great reference, iImprov -Chord/Scale Compendium is also a valuable ear training tool for learning the different scale and chord colors. The app organizes 25 different chord qualities into three families: Major, Minor, and Dominant. When a specific chord quality is selected, that chord is displayed in standard notation along with a key selection wheel. Depending on the chord, from 1 to 5 scales are recommended. The Fast Forward button cycles through these recommendations, and the Play button plays the currently selected chord and scale. For ease of recognition, the chords are displayed in close position (stacked 3rds), but the chord is sounded with a more practical voicing that might be encountered in a playing situation. As with other apps from JazzAppsMoblie, bass or treble clef can be selected, as well as the appropriate transposition for your instrument. All scales and chords may be presented in any key. ## Key features - Visual and audio scale/chord reference - Ear training tool - Organizes 25 chord qualities - Key selection wheel - Recommended scales for chords - Audio playback of chords and scales - Bass/treble clef selection - Instrument transposition ## Recent user reviews (10 of 17) All indexed reviews: https://appshunter.io/ios/app/iimprov-chordscale-compendium/id453639147/reviews.md ### 4/5 — Good help *2018-02-18* seems to be the only chord app not for Piano, Guitar & Ukulele ### 5/5 — Update *2017-12-19* Update to make compatible with iOS 11 please!! ### 1/5 — Update?... *2017-11-10, version 1.0* Still not updated...is this going to be Done?.. 10 November 2017 ### 1/5 — Update please *2017-09-26, version 1.0* No longer works with ios 11 update please. Still works on phone ### 5/5 — We need a new version ASAP! *2017-08-20* This app is 32bit and will not work with iOS 11! Please update soon! I use it to practice with my saxophone. Great APP!! ### 5/5 — No Brainer!!! Get this App *2016-12-19* I've played by ear almost all my life with a tad bit of formal training. This app fills all the gaps and gives you a guide to Pandora's box! Great app! I recommend this app to any musician looking to unlock your potential. Easy navigation too! Backing tracks to practice to, bpm control, options to change the key of each example. Kudos to developers. ### 5/5 — This app rocks *2015-12-15* Lots of great, useable info here and in the other apps. Solid app suite. ### 2/5 — Good reference but ... *2014-03-03* Needs loop and tempo feature so that you could practice along with the scales ### 2/5 — Not great for ear training *2013-04-30* Useful for understanding relationships between chords and scales but ear training playback is way too fast - cant really internalize the sounds. If you're looking for ear training on the go this is not the program. ### 5/5 — Is what it is *2012-12-17* If you want a reality based music education 1) Learn to read music 2) Learn relationships between chords and scales and 3) Practice. This is simply an accurate, inexpensive tool. ## Frequently asked questions about iImprov ### What is iImprov - Chord/Scale Compendium? iImprov - Chord/Scale Compendium is a music reference app that provides visual and audio representations of scales and chords for jazz improvisation. It's designed to help users learn and train their ear. ### How does iImprov - Chord/Scale Compendium organize chords? The app organizes 25 different chord qualities into three families: Major, Minor, and Dominant. When a chord quality is selected, it's displayed with a key selection wheel and recommended scales. ### Can I hear the chords and scales in iImprov - Chord/Scale Compendium? Yes, the app features a Play button that allows you to hear the currently selected chord and scale. It also provides practical voicings that might be encountered in a playing situation. ### Does iImprov - Chord/Scale Compendium support different instruments? Yes, you can select bass or treble clef and choose the appropriate transposition for your instrument. All scales and chords can be presented in any key. ### What is the price of iImprov - Chord/Scale Compendium? iImprov - Chord/Scale Compendium is a paid app, priced at $0.99. It does not feature in-app purchases or advertisements. ### What devices does iImprov - Chord/Scale Compendium support? The app is supported on iPhone, iPad, and iPod. It has an age rating of 4+. ### How often is iImprov - Chord/Scale Compendium updated? The latest version of iImprov - Chord/Scale Compendium is 1.3, which was last updated on December 29, 2019. It was initially released on August 4, 2011. ### What do users think of iImprov - Chord/Scale Compendium? iImprov - Chord/Scale Compendium has an average rating of 3.6 stars from 22 ratings. User feedback often relates to its utility as a reference tool for improvisation. ## Version history (last 4 releases) ### 1.3 — 2019-12-29 Fixed issue with clef preference change not immediately updating the figures. ### 1.2 — 2019-12-28 Updated for iOS 13. ### 1.1 — 2018-01-02 Updated to work with iOS 11. ### 1.0 — 2011-08-03 No release notes. ## Apps similar to iImprov | App | Rating | Price | Category | | --- | --- | --- | --- | | [Guitar Scales & Chords Power](https://appshunter.io/ios/app/guitar-scales-and-chords-power/id647000751) | 4.8 (92) | $5.99 | Music | | [Guitar Chord Finder : Fabulus](https://appshunter.io/ios/app/guitar-chord-finder-fabulus/id1559087405) | 4.5 (70) | Free | Music | | [Piano Chords and Scales](https://appshunter.io/ios/app/piano-chords-and-scales/id714086944) | 4.8 (9,136) | Free | Music | | [Guitar Gravitas: Chords Scales](https://appshunter.io/ios/app/guitar-gravitas-chords-scales/id1171417699) | 4.8 (3,896) | Free | Music | | [Ultimate Guitar: Chords & Tabs](https://appshunter.io/ios/app/ultimate-guitar-chords-and-tabs/id357828853) | 4.7 (469,246) | Free | Music | | [Chordify: Songs, Chords, Tuner](https://appshunter.io/ios/app/chordify-songs-chords-tuner/id1073624757) | 4.7 (33,248) | Free | Music | ## More apps by Jazz Apps Mobile LLC - [iImprov - The Minor II V](https://appshunter.io/ios/app/iimprov-the-minor-ii-v/id421582805) - [iImprov - Modal](https://appshunter.io/ios/app/iimprov-modal/id434112459) - [iImprov - Fundamentals](https://appshunter.io/ios/app/iimprov-fundamentals/id492450066) - [iImprov - Bebop](https://appshunter.io/ios/app/iimprov-bebop/id572415820) - [iImprov - Contemporary Colors](https://appshunter.io/ios/app/iimprov-contemporary-colors/id650677414) All apps by Jazz Apps Mobile LLC: https://appshunter.io/developer/421582808 ## Related topics [piano chords jazz](https://appshunter.io/ios/topics/piano-chords-jazz) · [guitar chords jazz](https://appshunter.io/ios/topics/guitar-chords-jazz) --- *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 2026-08-01.*