A free app for Android, by Apps Nemo.

Real Guitar is a free application for playing the guitar, in all its forms (acoustic, electric, and bass), in a real-time way, with the possibility of recording and jamming, and with an interactive interface.

You will be able to choose the type of guitar (acoustic, electric, and bass), and even the sound (realistic, standard, and bass).

If you are a beginner, you can start by learning the basics of chords and playing simple melodies. As you become more experienced, you can practice with more difficult chords and play more complex melodies.