Welcome to P2ner!
P2ner is a simple chromatic tuner which you can use to tune your guitar, flute, piano or other instruments.
The tuner can show you the exact note/frequency of the played sound with the difference in cents (little grey arrow). It fully runs in your browser without sending any audio data to any server. The operation range is from D1 (36.7 Hz) to A7 (3520 Hz).
Cheers!