Guitar Tuner i3Factory World, is a cool interactive App for tuning a guitar by the i3F algorithm .

This app use the Fourier algorithm to calculate the fundamental frequency of a captured audio sound. Also, we apply the algorithm to analyze live sound to build this guitar tuner.

The App use the internal microphone and you're playing a guitar or bass guitar, like most analog tuners come equipped with a small, inbuilt microphone, but obviously it will pick up any additional noise that's going on around you, so you need to find a quiet spot to tune up using the microphone.

How it helps you get in tune

Basically, you play a string, the i3Factory World guitar tuner recognises its pitch and then using light indicators (small red and green lights) and usually a reference needle, the tuner will tell you if that string is sharp or flat

Owr tuner uses Manual note selection.