FourChords Guitar Songbook is a beginner-friendly app that helps users learn how to play their favorite songs on the guitar. The app offers simplified chords with lyrics, backing tracks, tutorials, tuner, and real feedback. It includes play-along versions for over 2000 hit songs, with no knowledge of tabs or sheet music required. The app breaks down songs into four simple guitar chords, making it easy for beginners to master them. The app listens to users play and provides feedback on how to improve. The app also offers chord and strumming video tutorials by Justin Guitar. With adjustable tempo and transposition to easier chords, users can practice at their own pace. The app also allows users to track progress and receive useful tips and feedback. FourChords Guitar Songbook is available for free with a monthly and yearly subscription package that unlocks unlimited access to FourChords Song Catalog and weekly new releases.