Tuner
Play or sing a note and see how close you are, to the cent.
Nothing is recorded and no sound leaves your device.
How the chromatic tuner works
Press Start tuning and play a single note. The tuner finds the nearest note of the twelve, shows its name and octave, and turns the needle by how far you are from it, in cents. A hundred cents make one semitone, so being within five cents either side is in tune for almost any music, and the green light comes on.
It works for any instrument or voice: flute, saxophone, cello, harmonium reeds, or a singer checking a long note. Choose an instrument above to see its strings and tune them one by one instead.
Reference pitch
Most music is tuned to A4 = 440 Hz. Some orchestras and bands tune a little higher, to 442 or 443, and early music groups often go lower. Change the reference pitch and every note follows it.
The tuner listens through your microphone only while it is on. Nothing is recorded and no sound leaves your device: each tiny slice is analysed on the spot and thrown away.
Other tuners: guitar, bass, ukulele, violin and the chromatic tuner for any instrument or voice.