Turn your iPhone into a professional high precision custom guitar tuner featuring StopperStimmung for acoustic and electric guitars. Make your guitar sing with Tunic Guitar by one of the most exciting findings in tuning research!
Accuracy: < 0.05 cent. As opposed to many "real" tooners, your iPhone has dedicated hardware to be turned into a professional tuning device with the right software.
This version provides the classic E tuning template at standard pitch (440 Hz). For variable pitch (415-460 Hz), and more (open) tuning templates, use the full version available on the App Store.