The APP001 is a theremin-like instrument made using an Arduino as the backbone and is currently on v1. It makes use of light sensors instead of capacitive sensors to control amplitude and pitch. Its prototype was developed and featured in the first SYNTHICIDE exhibit titled SYNTHETIQUE held in March of 2024 at Anima Art Space. APP stands for Adam Project Prototype and this is the first instrument in that series. A second instrument, APP002, which was also featured in the exhibit, is also in prototype phase.