Amplifier is a free Android application developed by Mudasar Tariq under the multimedia category. This app allows you to turn your phone into a guitar amplifier by simply plugging in your speaker pin into the device's headphone jack and placing it near your guitar.

The app is user-friendly and easy to use. You can adjust the volume and gain to your preference, and even add various sound effects to enhance your playing experience. With Amplifier, you no longer need to carry around a bulky amplifier to practice your guitar skills.

Overall, Amplifier is a great tool for guitar enthusiasts and musicians who want to practice on the go. However, it is important to note that the app is not intended for professional use and may not provide the same sound quality as a traditional amplifier.