A free app for Android, by Blowbend-Jp.

Guitar Tuner – The Ultimate Free Guitar Tool is a free and useful application that is designed for Android devices. It can be used to tune your guitar and other types of music instruments. It is very easy to use and can be used by anyone. You will only have to use the microphone to capture the sound of your instrument and then you will be able to use the results to find the exact pitch. 

There are different types of instruments that you can tune, including guitar, piano, violin, flute, saxophone, and others. There are also different types of music that you can tune, including classical, jazz, pop, rock, blues, and others. 

You will only have to use the microphone to capture the sound of your instrument and then you will be able to use the results to find the exact pitch.