Guitar Songbook is a songs lyrics viewer with guitar chords toolkit.

Main features:
- Songs lyrics viewer with highlighted chords
- Chords transposition (any song to any key)
- Auto scrolling while playing
- Adding custom songs with advanced chords editor
- Playlists / setlists with songs
- Chord diagrams for guitar ukulele and mandolin
- Songs database available offline as well as with online updates
- Customizable displaying styles: chords among words chords above lyrics or at the end of line
- Several chords notations supported: English ("Am Bbm Bb B C Dm") and German ("a b B H C d")
- Automatic chords detection
- Custom songs & settings synchronization between many devices back-ups & restoring all application data
- Always-on display while playing
- User favourite songs latest songs and recent history list
- Filtering songs by languages
- Fullscreen mode
- Importing & Exporting songs from / to files or Google Drive
- Social contributing to songs database
- Editing any song
- Songs browser with search engine
- Scroll speed adjustment
- Color schemes and font typeface selection
- Saving last chords transposing
- Opening a random song

Guitar Songbook is a tool mainly focused on guitarists but it also can be used just to view the songs lyrics on mobile devices.
It has many songs with chords on board and its database can be easily extended with your own songs.