See every scale, chord and position right on the fretboard. Create your free account and display your first scale in 30 seconds. No credit card.
Free account, no commitment. You're in the tool in 30 seconds.
Ninety seconds, no commentary: the tools go by, from the fretboard to progressions, all the way to your work sheet.
1 min 30
Three applications in a simplified version, no account and no credit card. Switch from one to the other in a click.
No account, no credit card.
No more searching blind. The notes, the intervals, the chords that sound good together: it's all laid out on your fretboard. You read it like a map, not like a maze.
Pick a key and get every chord that works together, with their diagrams and scale degrees. You know what to play, and why it works.
A chord is not only searched by its name. Twelve also lets you:
Drag the degrees of a scale, get real guitar diagrams, loop your progression. You explore, you try, you find your sound.
Your charts, your diagrams, your tabs, your media: you pin them, lay them out, print them. Your repertoire no longer gets lost in scattered screenshots.
4.8/5 from 95 verified reviews · Read all 95 reviews
I am a musician and developer. I created Twelve Assistant to turn theory into practical tools, then kept improving it with feedback from the community. The goal has never changed: help you understand and create without drowning in jargon.
Try it for free, then choose the plan that fits you. No catch: you can try everything before you pay.
See all plans (Harmony alone, Trainer, monthly €9.99, Lifetime)
With just three scales, you already have thousands of chords at hand and countless ways to build your progressions. You keep your work, you come back whenever you want, and you move up the day you need to.
Create my free accountNo credit card, no commitment.
Yes. Beginners can visualize the basics and build their first reference points. Intermediate and advanced guitarists can compare scales, analyze harmony and prepare more complex projects.
No. The tools are designed to make musical concepts visible and audible. Start with a simple question, then go deeper at your own pace.
Guitar includes the fretboard and diagram tools. Premium adds Harmony, Twelve Trainer and Premium access to Backing Track Finder.
Yes. You can turn off renewal from your account. Access remains active until the end of the period you have already paid for.
Create your free account, keep your work, and come back whenever you want. No credit card.
No credit card, instant access.
