Very useful app for beginners to music theory.
Response from developer
Great idea. This has been added to version 1.4.1 (among other improvements)

This comprehensive toolkit offers a suite of essential features for guitarists, including a tuner, metronome, scale and chord finders, and practice tools. It aids in learning music theory, mastering the fretboard, and transposing songs.
1.7.3
August 5, 2026
• New Scale Sharing tab in Scales - build a list of up to 4 scales and compare their notes on one fretboard, colour-coded per scale with pie-slice dots where two or more scales share a note. • Scale Sharing bolds and colours each scale's {bold:root, 3rd, and 5th} in its notes list, and rings those same notes on the fretboard — a full ring on a solid dot, or just the relevant slice on a shared pie-slice dot. • New Highlight Triad Notes toggle in settings under Scale Sharing lets you turn the fretboard ring highlight off for a plainer view. • Triad Positions has moved from Position Finder to a new Triads tab in Scales, joining the Scale and Sharing tabs - it now shows chord tones across the full 24-fret neck (the fret From/To pickers are gone), with the fretboard scrolling horizontally and fixed string labels to match the other Scales tabs. Use the string-set checkboxes to focus the display. Your saved chord progressions carry over automatically. • Position Finder is now a single, focused scale-position tool. • Scales now shows a Diatonic Chords toggle for scales that have one (Major/Minor and their modes, Harmonic Minor/Major, Melodic Minor) — switch between the scale description and its diatonic chord sequence. • Fixed Dorian, Phrygian, and Locrian descriptions in Scales, which previously showed a generic "Major scale" description instead of their own.
MoreGreat idea. This has been added to version 1.4.1 (among other improvements)
GTK - Guitar Player's Toolkit is a paid application designed to assist guitarists with various aspects of their playing journey. It includes tools for tuning, practicing scales and chords, understanding music theory, and transposing songs.
GTK includes a tuner, metronome, scale finder, Circle of Fifths, position finder, mode converter, note practice, triad practice, Chord Master, and chord transposer.
GTK is a paid application priced at $9.99. This one-time purchase grants access to all its features.
No, GTK does not contain advertisements. As a paid application, it offers an ad-free experience for uninterrupted practice.
GTK is available on iPhone and iPad devices.
The latest version of GTK is 1.4.3, and it was last updated on May 6, 2026. Updates typically include new features and improvements.
GTK has an age rating of 4+, making it suitable for users of all ages.
Yes, GTK includes tools like the Circle of Fifths, scale finder, and chord master that are invaluable for learning and understanding music theory concepts.