01 · Find the note
Wide when you are far.
A ±50-cent view makes the direction obvious and keeps large corrections calm.
−29.8¢
Precise chromatic tuning for iPhone
Hear the note.Tune the last cent.
Tuner shows the note, exact cents, and which way to go. Its meter magnifies as you close in, so the final hair of tuning is as easy to read as the first turn.
- Every note
- A4 from 415–466 Hz
- No ads or clutter
Locked at 0.0¢
Most tuner needles get twitchier when precision matters most.
The closer you get, the closer Tuner looks.Adaptive zoom
One meter.The right scale for the moment.
Start with the whole problem in view. As your note approaches center, the scale tightens from ±50¢ to ±6¢, giving small movements more room without changing how the tuner works.
02 · Settle the pitch
Fine when you are close.
The meter magnifies in stages until the last few cents have the entire scale.
+0.0¢
Only what helps
More signal.Less tuner.
See pitch over time
A live ribbon makes vibrato, drift, long decays, and the moment a note settles visible—not just the latest needle position.
Truly chromatic
Every note, every octave, and any instrument that can hold a clear pitch.
Feel the lock
A gentle haptic tick confirms dead center, so your eyes can return to the instrument.
The short version
Questions, tuned.
What can I tune?
Tuner is chromatic, so it listens for every note rather than one fixed guitar tuning. Use it with guitar, bass, strings, brass, voice, or any instrument that can hold a clear pitch.
Why does the meter change scale?
A wide ±50-cent view helps when a note is far away. As the pitch gets closer, the meter progressively magnifies down to ±6 cents so small adjustments are easier to see.
Can I change the reference pitch?
Yes. You can set A4 anywhere from 415 to 466 Hz for alternate, orchestral, and historical tunings.
When will it be available?
The public App Store link and release timing have not been announced yet. This page will point directly to the listing when it is ready.
TunerBuilt for iOS 26Coming to the App Store
Find the note.Leave the rest quiet.
Release timing has not been announced yet. The App Store link will appear here when Tuner is ready.