A free app for iPhone, by Yousician Ltd..

GuitarTuna is a world-famous tuner that will help you find the perfect pitch for your guitar, bass, and ukulele.  Whether you’re a beginner musician or an expert, GuitarTuna can tune your musical instrument for you.

This tuning app will make tuning a breeze. In fact, you don’t have to buy an expensive and complicated tuner anymore because GuitarTuna will do the work for you. All you have to do is download this free and simple tuner app. It will help you find the perfect pitch for your guitar, bass, and ukulele.