Meet the Treyner: a guitar learning tool with Bluetooth that combines with your iPhone or Android device to show you how to play new songs. It comes with a fret indicator with 72 LEDs. It listens to you as you play to give you feedback and guidance in real-time.
The Treyner mounts to most full-size right-handed acoustic guitars. It comes with an adjustable upper neck clamp, vertical offset, and sensor offsets. You can use the companion app to play against friends, customize LED color scheme, plan, and record sessions.