A comprehensive and interactive chord book for guitar on your mobile device. The Fretlight® Chord and Scale App is a comprehensive and interactive chord book on your mobile device! Connects easily to your wireless Fretlight Guitar thru Bluetooth® LE (Bluetooth Low-Energy, Bluetooth Smart). A drop-down menu allows quick access to thousands of chord and scale patterns in any type, key or position. The "Favorite List" allows creation of 3 custom chord or scale progression lists so you can easily step forward or backward through your own creation of up to 10 unique chord and scale positions. There's a Tempo Control and even a "Click Track" to keep you in time. “Hover-over” the finger charts to see a photo example of fingering positions. Features: - Open Chords, Chords, Chord Tones, Arpeggios - Chord Progressions (User entered) - Scales - Triads & Inversions - Intervals - Individual Notes - "Lefty" Mode - Bass Guitar display option - Blinking Root Notes - On-screen Virtual Fretboard - Music Theory and Glossary - Compatible with PageFlip Bluetooth foot pedals Fretlight device compatibility: - iPhone 5S+ - iPad Gen 3rd+ - iPad Mini+ - iPad Air+