GuitarTool: Tuner & Chords

Tune your strings, practice with a beat and find chord fingerings. GuitarTool brings a tuner, metronome and guitar/ukulele chord libraries together for everyday practice.

Core tools and practice features are free and work offline, with no ads or account required. Four basic looks are free; optional appearance themes can be previewed before buying each separately.

Paid themes change appearance only. Each theme is a separate one-time purchase, with no subscription or automatic renewal. Tuning, metronome, chord and practice tools remain free.

FLEXIBLE METRONOME
• 20–500 BPM, TAP tempo, 1–12 beats and editable accents
• Quarter, eighth, triplet and sixteenth-note subdivisions, plus eighth-note Swing
• Practice presets, progressive tempo and custom plans; rear-flash beat cues on compatible iPhones

Rhythm training
• Alternate audible and silent bars, or change tempo in stages by bar count. Customize and save your setup.

REAL-TIME TUNER
• Common tunings for guitar, ukulele, bass, violin and mandolin, plus chromatic mode
• Adjustable A4 reference from 430–446 Hz
• Tap a string to lock it and play its reference tone
• View the input device and a graph of the last 6 seconds of pitch deviation; microphone audio stays on your device and is never recorded or uploaded

GUITAR & UKULELE CHORDS
• 855 chord names for each instrument and 19,244 voicings in total
• Browse or edit fingerings and identify chord names from your selected positions; hear chords and preview, save or share chord cards

THEME GALLERY
• Four basic looks are free to use
• Preview appearance themes before unlocking each separately through the App Store
• Assets are bundled; once ownership is verified, purchased themes work offline without extra downloads
• Purchases and restoration require an internet connection

GuitarTool supports iPhone, iPad, Apple Watch tuner and metronome tools and interactive Home Screen widgets in multiple sizes. It offers 13 interface languages, Dynamic Type, VoiceOver and Reduce Motion.

Apple Watch and everyday practice
• Swipe between the watch metronome and tuner. Tune guitar, ukulele, bass or chromatically at A4 = 440 Hz, with haptic feedback when in tune
• The watch microphone starts only when you tap Start Tuning. Stop, change pages or leave the app to end tuning. Audio stays on the watch and is never recorded or uploaded
• On iPhone and iPad, the screen stays awake during foreground metronome playback or active tuning. You can allow auto-lock in Personalize
• The large interactive widget lets you select quarter, eighth, triplet or sixteenth notes and Swing, with settings synced to the app