GTK - Guitar Player's Toolkit
GTK - Guitar Player's Toolkit is #144 in Music Paid in China and charting in 2 of 30 countries we track.
Updated 25 Oct 2026 · rankings refresh through the day
DeveloperJon Machtynger
CategoryMusic
Price9.99 GBP
Released
Rating★ 5.0 (2)
Version1.7.5
Age rating4+
First seen by us
6 Oct 2026
Installs (est.)100+ worldwide
Rating
5.0 ★
2 ratings
Measured
Best rank now
#144
Measured
GTK - Guitar Player's Toolkit on the App Store
App details
App ID
6749509640
Publisher
Jon Machtynger
On the store since
Aug 2025
1 year on the store
Minimum OS
iOS 18.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
67 MB
Also listed in
Education
GTK - Guitar Player's Toolkit downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| MusicPaid | #144 | |
| MusicPaid | #62 |
Apps near GTK - Guitar Player's Toolkit on the chart
Music Paid, around #144.
Ratings
App Store, worldwide.
Rating
5.0 ★
2 ratings
Measured
Ratings
2
Measured
About GTK - Guitar Player's Toolkit
Over the many phases of my guitar playing journey, I got my head around concepts such as chord composition, triads, scales, modes, transpositions, but then had difficulty applying this to the fretboard. A disconnect between the theory and the guitar held me back.
This toolkit isn't a primer on theory. It's a collection of some very useful tools, some of which show how theory maps to your guitar fretboard making it more accessible and memorable. Theory doesn't have to be difficult. I built these tools for me, and now you get to use them too.
The Guitar Player's Toolkit includes the following tools:
Practice tools:
1) Note Practice
• Learn where every note is on the fretboard
• Set a tempo/pace to practice at. Choose the strings, notes, and enharmonic format, and you'll be given a note and a string number to play.
• Hear the note and compare it to what you hear on your guitar. See the note on the fretboard to help you learn.
• Start with a single string, and work up to string pairs or collections.
2) Triad Practice
• Triads are 3 notes that make up chords. Learn these across string sets, and extend your mastery of the fretboard.
• Like Note Practice - pick your chords, string set, type of chord (Maj/Min/Aug/Dim), an inversion (Root/1st/2nd), and a tempo.
• Hear the chord/triad and compare it to what you hear on your guitar. See the triad on the fretboard to help you learn.
• Start with a single string set, Maj/Min and increase the complexity in terms of diminished/augmented, and multiple string sets
Chord Theory
3) Chord Master
• A comprehensive chord library containing around 3600 chords.
• Create custom chords
• Know where to put the fingers, but don't know the name? Use this tool
• Know the notes, but don't know the name? Use this tool.
• Use the triad library to learn the finger positions across different string sets, inversions, and starting frets
• use the key based diatonic progressions library to help with song writing and melody construction
• All chords can be played with guitar accurate sounds to suit Nylon, Classical, and Steel strings.
4) Scales
• Show notes across every key - major, minor, diminished, augmented, but also modes, pentatonics, blues, jazz, Arabic / middle eastern, exotic, symmetrical, Chinese, Japanese, Korean, and so on.
• Compare up to 4 scales, triads, or chords at once on a single, colour-coded fretboard in Scale Sharing, with shared notes marked and notes of interest highlighted.
• See diatonic chords for scales that have them (Major/Minor and modes, Harmonic Minor/Major, Melodic Minor), and explore a triad library across different string sets and inversions for any chord progression you build
• For scales with a diatonic chord sequence, toggle between the scale's note description and its chord sequence
5) Position Finder
• Want to play a scale in a specific key, but at a place in the fretboard that suits you?
• Want to play without having to slide your hand up and down the fretboard?
This toolkit isn't a primer on theory. It's a collection of some very useful tools, some of which show how theory maps to your guitar fretboard making it more accessible and memorable. Theory doesn't have to be difficult. I built these tools for me, and now you get to use them too.
The Guitar Player's Toolkit includes the following tools:
Practice tools:
1) Note Practice
• Learn where every note is on the fretboard
• Set a tempo/pace to practice at. Choose the strings, notes, and enharmonic format, and you'll be given a note and a string number to play.
• Hear the note and compare it to what you hear on your guitar. See the note on the fretboard to help you learn.
• Start with a single string, and work up to string pairs or collections.
2) Triad Practice
• Triads are 3 notes that make up chords. Learn these across string sets, and extend your mastery of the fretboard.
• Like Note Practice - pick your chords, string set, type of chord (Maj/Min/Aug/Dim), an inversion (Root/1st/2nd), and a tempo.
• Hear the chord/triad and compare it to what you hear on your guitar. See the triad on the fretboard to help you learn.
• Start with a single string set, Maj/Min and increase the complexity in terms of diminished/augmented, and multiple string sets
Chord Theory
3) Chord Master
• A comprehensive chord library containing around 3600 chords.
• Create custom chords
• Know where to put the fingers, but don't know the name? Use this tool
• Know the notes, but don't know the name? Use this tool.
• Use the triad library to learn the finger positions across different string sets, inversions, and starting frets
• use the key based diatonic progressions library to help with song writing and melody construction
• All chords can be played with guitar accurate sounds to suit Nylon, Classical, and Steel strings.
4) Scales
• Show notes across every key - major, minor, diminished, augmented, but also modes, pentatonics, blues, jazz, Arabic / middle eastern, exotic, symmetrical, Chinese, Japanese, Korean, and so on.
• Compare up to 4 scales, triads, or chords at once on a single, colour-coded fretboard in Scale Sharing, with shared notes marked and notes of interest highlighted.
• See diatonic chords for scales that have them (Major/Minor and modes, Harmonic Minor/Major, Melodic Minor), and explore a triad library across different string sets and inversions for any chord progression you build
• For scales with a diatonic chord sequence, toggle between the scale's note description and its chord sequence
5) Position Finder
• Want to play a scale in a specific key, but at a place in the fretboard that suits you?
• Want to play without having to slide your hand up and down the fretboard?
Latest updates
1.7.5
• Sometimes, the Tuner's accuracy wasn't properly reflected by the UX. Now shows a Locked / Listening… stability indicator so you can tell when a reading is settled and trustworthy, rather than mid-analysis.
• Tuner now holds your last reading on screen (dimmed) when the signal drops, instead of pre-emptively clearing it, and switches between notes more responsively when you test several in quick succession.
1.7.4
New Chords tab in Scales — Show notes from any chord name (type it in) and see all its notes across the whole fretboard, colour-coded per chord with pie-slice dots where two or more chords share a note and the root ringed. Draws on the same curated chord library as ChordMaster
Store changes
What GTK - Guitar Player's Toolkit changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated 