Guitar Tuner

Guitar Tuner turns your phone into a precise, stage-ready tuner. Play a string and watch the animated needle glide to the note — red when you're far, amber when you're close, and a satisfying green (plus a gentle vibration) the moment you're in tune. TUNING • Fast, accurate pitch detection through your phone's microphone • Smooth animated needle gauge with cent-precision readout • Auto string detection — just play, it finds the string for you • Tap any string to lock onto it for noisy environments • Haptic pulse tells you the string is in tune without looking TUNINGS • Standard (E A D G B E) • Drop D • Half-step down • Open G • DADGAD • Chromatic mode for any note, any instrument MADE FOR REAL PLAYERS • 100% offline — no account, no sign-in, tune anywhere • Dark, glare-free design built for dim rooms and stages • Screen stays awake while you tune • Free to download and use Whether you play acoustic, electric, or bass-adjacent open tunings, Guitar Tuner gets you in tune in seconds and out of your way.