GTK - Ukulele Player's Toolkit

Welcome to the Ukulele Player's Toolkit. When I originally built the Guitar Player's Toolkit, they were tools that I wanted to use, and still continue to use. A friend suggested that ukulele players might want the same, and so I decided to invest the time in building them. It provides everything from theory, tuning, chord composition, and tempo as well as some good practice utilities. A story that I hear from many casual players of stringed instruments such as Guitar, Ukulele, and Banjo is that they try to get their head around concepts such as chord composition, triads, scales, modes, and transpositions, but then have difficulty applying this to the fretboard. Much like it held me back, a disconnect between the theory and the fretboard holds them 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 fretboard making it more accessible and memorable. This application is under constant development. If you have any feedback for improvements, or any issues with the app, please use the 'Contact Us' button in Settings and we will respond No ads, no subscriptions, and no internet required. CHORD TOOLS • Chord Master — Over 4200 chord voicings using multiple tuning approaches (including Baritone). Browse by key, build chords note-by-note, or place fingers on an interactive fretboard to discover what you're playing. Hear every chord played in whole, or arpeggiated. • Chord Library — Search 100+ chord types with strict or fuzzy matching. Filter by key, browse diatonic and borrowed chords, save favourites. View diagrams showing finger positions, intervals, or note names. • Custom Chords — Create and name your own chords on an interactive grid. Auto-detect the chord name, play it back, and export/import to share with others. • Transpose — Move the chords from a song to any key in seconds, with capo-aware transposition. THEORY TOOLS • Scales — 80+ scales across 14 categories: major, minor, modes, pentatonic, blues, jazz, Arabic, Indian ragas, Japanese, Chinese, and more. Interactive fretboard shows colour-coded positions with diatonic chord analysis. Tuning-aware for Standard, Low G, D Tuning, and Baritone. • 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 • Circle of Fifths — Tap any key to explore its modes, diatonic chords, and Roman numeral analysis. Includes key signature staff and enharmonic equivalents. • Position Finder — Pick a fret and pick your key. Instantly see which scale modes fit there. Covers major, minor, harmonic minor, melodic minor, and chord tone patterns. • Mode Converter — See exactly how any mode transforms into another — note by note, semitone by semitone. PRACTICE TOOLS • Note Practice — Drill fretboard note names at your own pace. Set tempo (5–120 BPM), choose strings and notes, display as text or fretboard diagram, and hear each note played. Includes a timed challenge mode. • Metronome — 40–240 BPM with tap tempo, configurable time signatures, first-beat accent, and four click sounds (Woodblock, Click, Cowbell, Bell). • Chromatic Tuner — Real-time pitch detection with ±1 cent accuracy, visual needle gauge, colour-coded feedback, and Hz display. Covers the full ukulele range TECHNICAL Works completely offline Supports Standard (GCEA), Low G, D Tuning, and Baritone (DGBE) Adaptive layout for iPhone and iPad Full light and dark mode support Your audio is processed entirely on-device and never recorded or transmitted