Have you ever played piano on a piece of paper? Just print out a PDF file, put your phone on the paper, and you can play instantly! 6 instruments are available in this app: piano, music box, organ, brass, phone, voice. It uses the front-facing camera and can detect up to 10 fingers. The lag is very small due to advanced algorithms. This version supports iOS 7 as well!
MORE INSTRUMENTS
6 musical instruments are available: Piano, music box, organ, brass, phone, voice.
DETECT UP TO 10 FINGERS
The app uses the front-facing camera and can detect up to 10 fingers at the same time.
VERY SMALL LAG
The lag is very small due to advanced algorithms.
MORE OCTAVE
You can change between octaves.
- Much better performance
- Included drum and typing
Paper Keyboard - Fast typing and playing with an alternative printed projector keypad 
Paper Keyboard Pro - Fast typing and playing with a printed keyboard 