KeyChord - Piano Chords/Scales
Books & Reference
The dynamic dictionary/reference app for piano chords and scales!
- Rating
- 4.8
- 375 ratings
- Downloads
- 22.2K+
- on Google Play
- Price
- $2.99
- No in-app purchases
- Updated
- Aug 3
- 2026 · v2.176
Screenshots
About KeyChord - Piano Chords/Scales
The 2.0 version has been featured on Google Play and made it to the top selling list!!
Keychord is the dynamic dictionary / reference app for piano chords and scales. Use it to find all the scales and chords! Also included is a 5 octave multitouch piano!
In short:
Easy virtual keyboard to lookup and play around with all chords and scales. Lots of chordtypes and scaletypes to choose from. Also reverse lookup and staff view.
Included is the 5 octave scrollable multitouch minipiano with 128 different sounds from Mini Piano Pro.
Features:
- 50+ ChordTypes
- 100+ ScaleTypes
- Note Names
- Component Intervals
- Reverse Chord & Scale Lookup, including Partial Chords
- Inversions / Slashed Chords
- Staff View
- Favorite and recent Chordtypes
- Hear every Chord and Scale
- Full 5 octave multitouch virtual piano from Mini Piano Pro
- Record songs as midi and set them as ringtone
In detail:
KeyChord is built around a virtual keyboard that you can use to interact with the selected chord- or scaletype. You can for instance tap on a key to make it the root of the chord or you can longpress a selected chordnote to invert the chord to that position. Same goes for scales. Tap a already selected rootnote for different kind of information modes like note-names or intervals.
Everything is dynamic, we don't use a database to give you a few predefined chord locations, but we know how a chord works and let you select a chord everywhere you want.
To add to the dynamic nature of this app, we also included a reverse lookup, both for chords and scales. Easily select the notes of the chord you have in mind (or have discovered on your piano) and let KeyChord tell you how it's called. It supports even missing notes (Like CMaj7 (no 5th)).
Audio playback is also enabled in all modes.
As bonus the playable piano from Mini Piano Pro (128 sounds and 5 octaves) is included.
Ideal companion for a learning fakebook or realbook jazz piano.
Keychord is the dynamic dictionary / reference app for piano chords and scales. Use it to find all the scales and chords! Also included is a 5 octave multitouch piano!
In short:
Easy virtual keyboard to lookup and play around with all chords and scales. Lots of chordtypes and scaletypes to choose from. Also reverse lookup and staff view.
Included is the 5 octave scrollable multitouch minipiano with 128 different sounds from Mini Piano Pro.
Features:
- 50+ ChordTypes
- 100+ ScaleTypes
- Note Names
- Component Intervals
- Reverse Chord & Scale Lookup, including Partial Chords
- Inversions / Slashed Chords
- Staff View
- Favorite and recent Chordtypes
- Hear every Chord and Scale
- Full 5 octave multitouch virtual piano from Mini Piano Pro
- Record songs as midi and set them as ringtone
In detail:
KeyChord is built around a virtual keyboard that you can use to interact with the selected chord- or scaletype. You can for instance tap on a key to make it the root of the chord or you can longpress a selected chordnote to invert the chord to that position. Same goes for scales. Tap a already selected rootnote for different kind of information modes like note-names or intervals.
Everything is dynamic, we don't use a database to give you a few predefined chord locations, but we know how a chord works and let you select a chord everywhere you want.
To add to the dynamic nature of this app, we also included a reverse lookup, both for chords and scales. Easily select the notes of the chord you have in mind (or have discovered on your piano) and let KeyChord tell you how it's called. It supports even missing notes (Like CMaj7 (no 5th)).
Audio playback is also enabled in all modes.
As bonus the playable piano from Mini Piano Pro (128 sounds and 5 octaves) is included.
Ideal companion for a learning fakebook or realbook jazz piano.
What’s new
Version 2.176 · Updated August 3, 2026
- Improved responsiveness - Audio quality improvements and noise / distortion reduction - Reduced app file size - Bugfixes - Stability improvements
User reviews
Gr8. Tyvm.
This app has helped tremendously
Wao..... I firstly launched this app, and just now I noticed 6 hours passed.. The reverse scale mode is almost gaming or DAW. (This app of course does the job intended very well.)
This app gives you so much more than a basic chord-scale chart!
Excellent
Thanks for making this app it has helped me greatly God Bless you
Alternatives to KeyChord - Piano Chords/Scales
Looking for apps like KeyChord - Piano Chords/Scales? Here are 6 similar Android apps on Google Play. The highest rated is Mini Piano Lite (4.5/5), and 5 of the 6 are free to download.
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| KeyChord - Piano Chords/Scales | 4.8 / 5 | $2.99 | 10,000+ | Aug 3, 2026 | |
| Mini Piano Lite | 4.5 / 5 | Free | 10,000,000+ | Nov 2, 2026 | Compare |
| KeyChord Lite | 4.4 / 5 | Free | 100,000+ | Aug 3, 2026 | Compare |
| Kana | – | Free | 500+ | Jul 25, 2015 | Compare |
| Mini Piano Pro | 4.5 / 5 | 1.99 USD | 10,000+ | – | Compare |
| DotClock | – | Free | 500+ | Oct 31, 2010 | Compare |
| Fretter Lite - Chords | 4.3 / 5 | Free | 50,000+ | Aug 30, 2025 | Compare |