Audio Input
Not connected
Required to select an input, calibrate, tune, or play.
Tuning
6th string (low E) to 1st string (high E)
Tune on the Go
Free on the App Store
Get OpenFret's guitar tuner as a native app for iPhone, iPad, and Apple Watch. Fast, accurate, and works offline.
Free Online Guitar Tuner
OpenFret's chromatic guitar tuner works directly in your browser with no download required. It uses real-time pitch detection through your microphone or audio interface to tune acoustic, electric, and bass guitars. The tuner supports standard tuning (E-A-D-G-B-E) and any alternate tuning since it detects all chromatic notes. For electric guitars, connecting through an audio interface provides the most accurate signal.
Need a tuner on stage or on the go? Download OpenFret for iPhone, iPad, and Apple Watch — it's free, works offline, and gives you the same accurate chromatic tuning in a lightweight native app.