Guitar, developed by Gesture Games, is a free Android app that allows you to define your chords, save presets, and play music like a pro. This app is the most customizable guitar simulator available in the market. Not only does it allow you to play guitar, but you can also try your hand at playing piano, sitar, and even bagpipes.

One of the most impressive features of Guitar is the ability to customize your playing experience. You can adjust the fretboard, strings, and even the sound effects to your liking. The app also includes a variety of guitar presets, such as acoustic, electric, and bass guitars, to make it easy for you to start playing right away.

Overall, Guitar is a great app for anyone looking to learn or improve their guitar skills. With its customizable features and variety of instruments, it's sure to provide hours of entertainment and musical exploration.