Not just for guitarists — StringTheoryPRO works for bass guitar and ukulele too. Every chord and scale in every key and mode can be viewed for guitar, bass and ukulele.
A roadmap that shows you what is available to play on your instrument.
With palettes of chords that sound good together the musician is free to explore and play creatively.
Immediately increase your creative potential
Play together with friends on other instruments
Transfer your skills on guitar to ukulele or bass guitar
The average chord dictionary is a large collection of random chords with zero context. Useful for looking up a specific chord — but what if you're not sure what chord your looking for?
When you know what works, you can focus on making music!
StringTheoryPRO helps you find just the right chords to play together. Chords are shown in context with a musical key, so you can have fun experimenting with different combinations with confidence.
See which chords play well together
Discover alternate chords to make your music more interesting
Identify key intervals in your chords
StringTheoryPRO includes a collection of the most useful chord progressions across multiple genres. Chord progression can be instantly transposed to any key or mode. Use them for inspiration, experiment just for fun or incorporate one into your next song.
Learn a variety of popular chord progressions
Find inspiration for your next song
Change chord progressions into other keys and modes
Creates an emotional, reflective feel common in acoustic ballads and indie-folk.
Key of C Ionian
Every chord can be played in 5 different positions using the 5 chord forms. It doesn't stop with chords - knowing how to locate the CAGED shapes helps with soloing too.
Play chords where you want — in any position on the fretboard.
Click any of the C·A·G·E·D chord form buttons to switch between the 5 positions of a chord.
Learn new options for playing chords you already know
Pick a chord and try playing it in all five CAGED positions
Unlock better soloing and improvisation
Learning scales is a core component to mastering your instrument. Scales are for more than just practicing - they are a way of learning to find the notes you need to make the sounds you want.
Many of the fastest and cleanest players built their technique largely through dedicated scale practice.
A key concept is pairing the correct scale with the your chord progression. StringTheoryPRO makes this a breeze, by always grouping the scales that match your selected key and mode.
Which scales fit with different chords
Add a melody to your chord progression
Learning scales to improve your solo playing
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The struggle is over... It's easier than ever to play with modes. StringTheoryPRO allows you to instantly switch between modes. Chords, scales, progressions are automatically transposed into the mode of your choosing.
Create your own signature sound
Most of us are familiar with the Major and Minor modes - there are actually seven different modes, each with their own unique sound qualities. Experiment with using modes to affect the character of your music.
Switching modes effects the mood of your music
Choose a chord you're familiar with and try switching modes
Use modes to impart a sense of emotion to your music
A simple concept with powerful uses. Playing chord tones over the chords in a progression is an instant level up for solos.
Your solos suddenly sound "in the song" instead of just "over it"
StringTheoryPRO shows you where to find the chord tones that match any chord, everywhere on the fretboard.
Chord tones are the notes that make up a chord
Try intentionally targeting chord tones when soloing over chord changes
Always find the right note that fits the feel you're aiming for
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Searching for the perfect chord to complete your progression? Using spice chords can add color and character to your music.
Give your music an unique, professional sound.
Spice chords are chords that use notes from outside the current key. Also called borrowed chords or non-diatonic chords. Adding spice chords is a fast way to sound more sophisticated without needing complex technique.
Sometimes playing the "wrong" chord sounds great
Try experimenting with the spice chords in your songs key
Easily identify which spice chords to try with any chord progression
Yes! StringTheoryPRO can be opened in your browser and installed as a "Progressive Web App" (PWA).
The user interface adapts to the size of your device's screen. We suggest using a tablet for the best experience on mobile devices.