GuitarTool - Music Practice

Tune, keep time, and find chords offline for guitar and ukulele. Explore alternate voicings, custom accents, tempo training, and multiple tunings.

GuitarTool is an all-in-one practice companion for guitar and ukulele players, combining a real-time tuner, a flexible metronome, and chord libraries in a clean interface.

REAL-TIME TUNER • Standard, half-step down, Drop D, DADGAD, Open G, GCEA, and chromatic modes • Calibrate A4 from 430 to 446 Hz • Reference tones plus cents, input level, and stability feedback • Microphone audio is processed only on your device and is never stored or uploaded

FLEXIBLE METRONOME • 20–500 BPM with tap tempo • 1–12 beats per bar with individual beat values and accents • Quarter, eighth, triplet, and sixteenth-note subdivisions • Eighth-note swing, practice presets, and progressive tempo training

GUITAR & UKULELE CHORDS • 520 guitar chord names covering common qualities and inversions • Multiple voicings for the same chord, switchable with arrow controls • Supports letter case, sharps, flats, common English spellings, and chord symbols • Edit fingering diagrams interactively and preview the current chord • Ukulele diagrams use standard GCEA tuning

MORE • Automatically follows the system language in Simplified Chinese or English • Light and dark themes • Fully offline, with no ads, accounts, or third-party tracking SDKs

Whether you are tuning before practice, building timing, or looking up a chord, GuitarTool keeps the essentials close at hand.