Tune Lab vs Instrument Tuner

Tune Lab — Simple, accurate guitar tuner that works instantly. Just pluck a string. Tune Lab listens through your microphone and shows you exactly how in tune you are — no buttons to press, no setup needed. FEATURES • Real-time pitch detection via microphone • Visual needle dial showing deviation in cents • All 6 guitar strings: E2 · A2 · D3 · G3 · B3 · E4 • Reference tone for each string to tune by ear • Clean dark interface, easy to read in any lighting • No internet required · No account needed · Completely free

SimpliTuner is a fast, accurate chromatic tuner for any instrument: guitar, ukulele, banjo, mandolin, violin, and more. Play a note and SimpliTuner listens through the microphone and shows you the nearest pitch in real time, with a clean dial that tells you at a glance whether to tune up or down. FEATURES • Chromatic pitch detection works with any instrument, not just guitar • Precision and Practice dial modes: switch between a fine, precise reading and a wider, easier-to-read gauge for quick tuning • Adjustable A4 reference pitch (400–480 Hz) for orchestras, alternate tunings, or personal preference — saved automatically • Light and dark mode • Full VoiceOver accessibility support • No setup, no accounts, no sign-in — open the app and start tuning PRIVACY FIRST All pitch detection happens entirely on your device. Microphone audio is never recorded, stored, or sent anywhere. SimpliTuner has no analytics and no third-party SDKs. Nothing about you or your playing ever leaves your phone. Whether you're warming up before a gig or tuning your first guitar, SimpliTuner keeps it simple: open the app, play a note, get in tune.