GuitarTool: Tuner & Metronome

New Rear Flash Beat follows all main beats or accents only, with three levels and preset saving. Improved tuner, Watch/widget sync, localization, and UI reliability.

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

Real-Time Tuner • Standard, Half Step Down, Drop D, DADGAD, Open G, GCEA, and chromatic modes • Adjustable A4 reference pitch from 430 to 446 Hz • Reference tones plus cents, input-strength, and pitch-stability feedback • Microphone audio is processed live on your device and is never uploaded or saved

Flexible Metronome • 20–500 BPM with tap tempo • 1–12 beats per bar with configurable beat units and accents • Quarter-note, eighth-note, triplet, and sixteenth-note subdivisions • Eighth-note swing, useful practice presets, and progressive tempo training • Rear Flash Beat follows all main beats or accents only, with three intensity levels, a safety reminder, and settings saved with custom practice presets

Guitar and Ukulele Chords • 855 chord names for each instrument, with 19,244 guitar and ukulele voicings in total • Multiple voicings for the same chord, with quick previous/next controls • Flexible matching for letter case, sharps, flats, common English names, and chord symbols • A fixed five-fret-high viewport that scrolls vertically through all 20 frets, with interactive editing and audio previews • Turn the current fingering into a clear chord card, then preview, save to Photos, or share it with the system share sheet • Standard GCEA ukulele tuning

More to Explore • 13 UI languages that follow the system or can be selected in the app • Day, Night, Pine, and Graphite themes • Adaptive iPhone and iPad layouts, an Apple Watch metronome, and three interactive widget sizes • Fully offline, with no ads, accounts, or third-party tracking SDKs

Whether you are learning to tune, building steadier rhythm, or looking up a chord, GuitarTool helps you stay focused on playing.