Only Tuner

Only Tuner is a simple, accurate tuner that does one thing well: get you in tune.

🎯 STROBE ACCURACY
A strobe-style dial spins when you're off and stops when you're in tune. The color moves from red to yellow to green, so you can tune at a glance — even from across the room.

🎸 TUNE YOUR INSTRUMENT
• Guitar (E A D G B E)
• Bass (E A D G)
• Ukulele (G C E A)
• Violin (G D A E)
• Viola (C G D A)
• Cello (C G D A)
Tap a string to hear its reference tone, or turn on Auto string detection and just play.

🎹 CHROMATIC TUNER + PIANO
Tune any instrument or your voice. The 7-octave piano (C1–C7) plays reference tones, and the key you're playing lights up in real time.

⚙️ MADE FOR MUSICIANS
• Adjustable reference pitch A4 (415–466 Hz) — 440 Hz by default, 442 Hz for orchestras
• Keeps the screen on while you tune
• Light and dark themes
• 17 languages with local note names (Do Re Mi, ドレミ, 도레미, H in German…)

🌿 FREE, NO ADS
All features are free. No ads, no account, no tracking. Microphone audio is analyzed on your device and never recorded or sent anywhere.

Only Tuner — just tune and play.