OpenChordBook reads and edits chord charts, with a full-screen sheet that leaves room for the music. Your library stays on your device. No account, ads, analytics or playback. • Read charts offline and transpose without hiding the chords • Write charts using ordinary chord names, with a live preview • Use named sections, repeat bars and different time signatures • Organize tunes in nested folders and choose a destination before importing • Import iReal Pro HTML playlists or paste playlist links • Export charts, selected tunes or a full folder to a playlist file • Search your library and group different versions of the same tune • Adjust chart size and switch between day and night themes • Optionally download community playlists from Discover Tunes are not packaged with the app; they are downloaded by the user. You do not need the iReal Pro app. Your library stays on your device, and you can export your tunes to keep a copy. Free software under GNU GPL version 3 or later. Copyright © 2026 Alexandre Campo. Independent of Technimo LLC and iReal Pro.