Hi my name is Johnny Quattro, I'm the inventor of the Jamn Multi-tool and the music wheel you see inside.

The app changed my life. It made my guitar playing reach a whole new level. I hope it does that for you too. Check it out and message me on Facebook if you need any help using it. Thanks!

The app has NO in-app purchases everything feature is available.

Who is this app for?
It's a must have interactive reference tool for musicians with basic music theory knowledge.

The app is the perfect companion to visualize a song’s hidden structure and chord progressions. The Jamn wheel that confers the app its uniqueness, reveals the relationships between keys, chords and scales for guitar (electronic guitar and acoustic guitar), bass, ukulele and piano. Re-discover the circle of fifths with Jamn multi-tool.

This multi-award winning app is perfect if you want to:
•Find chords that belong together to help write better songs
•Explore different scales and keys
•Get deeper into music theory
•Personalize existing songs by adding more chords
•Jam solo or with a band

• Guitar (electric guitar and acoustic guitar), bass, ukulele, and piano chords
• Revolutionary patented Jamn Wheel
• In-key chords and scales for every key plus audio
• Massive chords library
• Virtual chords of major and minor key
• Free updates
• Built-in tuner for guitar, bass, ukelele
• PROScales menu: Classic (Natural, Harmonic, Melodic), Rock (Pentatonic), Blues (6,7,8 note) Jazz (Dominant, Bebop), Exotics (Spanish, Japanese, Chinese)

Jamn Multitool is perfect if you are a:
•Casual music player
•Music lover
•Ukelele player
•Music band

"It’s a pocket-sized visual, textual, and audio music reference that stands to revolutionize guitar teaching."
Carolyn Heneghan, SoundCtrl

“Whether you're learning to play the guitar, or writing your own songs, Jamn looks like an essential download. It uses a wheel-based user interface to show the relationships between keys, chords and scales....”
Stuart Dredge, The Guardian


“What Jamn is, is a fantastic way to trigger the creative part of your brain. I know a lot of songwriters who could find uses for an app like this, just so they’re able to get their creative juices flowing.”
Nathan Snelgrove, Appstorm

“This app is totally worth it.”
J Hamilton, SonicBoomBap


“If you wanna play any key, expand your knowledge of chords and scales and everything, you should definitely check out Jamn app.”
Mishka, internationally-known reggae artist

“I love the way it puts theory in your pocket”
Luke Elsley, Guitarist, Benjalu

“It’s so intuitive.”
Nick Saxon, National Geo Reporter and Guitarist

Jamn Multi-tool, the best circle of fifths


What’s New

Version 3.2.8

Updated iOS12 SDK
Supported new devices screen sizes
Fixed a crash when using tuner

Ratings and Reviews

2.3 out of 5
3 Ratings

3 Ratings

Blues68550 ,

Rien compris ! 😕

Bonjour quelqu’un peut m’expliquer comment ça marche ? Car je n’ai rien compris sur la touche pour la nature de la guitare ainsi les notes ! Et aussi le truc rond exemple je met Do Majeur ça s’affiche Do Mi Sol mais si je change la fonction de guitare exemple Rock et ça s’affiche de Do jusqu’à le prochain Do (C D E F G A B C ) et ma remarque qu’il manque quand même bcp exemple Do Majeur ça s’affiche pour le premier frette mais pas sur le 3 eme Frette ou 5 eme frette ! Merci de m’expliquer de tout détails !

Pomme2Poule ,

Très bien mais parfois incomplet

J'ai pris la totale des achats in-app. L'app en elle même est bien, il n'y a pas de problème : fonctionnelle, etc. Elle fait vraiment son boulot. Le concept est très bon, clair et assez complet.

Toutefois à ce propos, je me dis que l'achat E-Hands+ est tout de même un peu limite...

Ça vaut peut être son prix certes, mais la liste des accords est loin d'être exhaustive (il manque un des accords de 7° !) et le bouton E-Hand n'est pas toujours là (quand bien même ce n'est pas le plus important). Aussi, le fait qu'il n'y ai pas systématiquement les variations est un peu dérangeant...

Mais je recommande tout de même l'application. Et pour ce qui est des achats-in-app, faites juste attention à pas trop vous laisser tenter.

Aaaaaaappppppssss ,

Multi instrument magic

Super useful, when playing on my bass I can check the correct cords or build arpeggios, then quick as a flash I can play the same chord progression on my keyboard or guitar, I have the scales in any instrument to build melodies, it’s my go too app for all my instruments in one place, the tuner function bugs but I don’t care as I use another app for tuning, this app gives me all the relevant cords in each key ! Magic I love it !


MiQ Limited
92.2 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Arabic, Catalan, Czech, Danish, Dutch, Filipino, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese

Age Rating
Rated 4+
© 2013 MiQ Limited
3,49 €
In-App Purchases
  1. Pro-Scales Starter Pack 2,29 €
  2. eHands plus 2,29 €
  3. Piano 2,29 €


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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