Tuna Beach Guitar Tuner

Tuna Beach is a precise, no-nonsense guitar tuner built for players who want their instrument in tune fast — with a little sunshine along the way. Play a string and Tuna Beach locks onto the pitch in a fraction of a second, showing you exactly how sharp or flat you are down to the cent. A calm, responsive needle and plain-language coaching ("nudge it up," "locked in") make it easy to use whether you're a beginner or a working musician tuning between songs. FEATURES • Accurate chromatic pitch detection, tuned for real guitar tone — not just pure sine waves • Guided tuning for Standard, Drop D, Half-Step Down, Open G, DADGAD, 4-string Bass, and Ukulele (GCEA) • Pro mode for full chromatic tuning across the range of any instrument • Adjustable reference pitch from A415 to A466 (default A440) for alternate tunings and orchestral pitch • Built-in reference tones for every string • Metronome with tap tempo, adjustable time signature, and sample-accurate timing that never drifts • Haptic feedback confirms when you're locked in — no need to stare at the screen • Clean, glare-friendly design that's easy to read on a stage or a beach towel PRIVACY Tuna Beach listens only to your instrument, only while the app is open, and only to detect pitch. Audio is processed entirely on your device. Nothing is recorded, stored, or sent anywhere. No ads. No account. No subscription. No in-app purchases. Just an accurate tuner.