Guitar Tuner is a free application developed by TrueStudio for Android users. As the name suggests, the app is designed to help guitar players tune their instruments with ease. It works by using your phone's microphone to listen and analyze the sound in real-time, recognizing which string you are playing and indicating if it is too low or too high.

One of the most notable features of Guitar Tuner is its automatic mode. With one click, the app will tune all six strings of your guitar, saving you time and hassle. Additionally, the app offers a chromatic mode that allows you to tune to any pitch you desire. The metronome feature is also included to help you keep time while playing.

Overall, Guitar Tuner is a must-have for any guitar player looking for an easy and reliable way to tune their instrument. With its accurate and user-friendly interface, this app is highly recommended for both beginners and professionals alike.