Samples the audio signal and analyzes audio using a Discrete Fourier Transform. The app will tell you which frequency in the signal is the loudest, and tell you if the note is in tune or not.

There are plenty more music-related apps that make learning and playing guitar and other instruments much more accessible than 20 years ago, but these two are the essential must-have apps on my iPhone ...

This is the repository of the Wear Guitar Tuner Application. It is a standalone guitar tuner for Android Wear that can be customized. Settings can be adjusted on the wearable device or on the handheld ...