iArroto is a system designed for fun. There are over ten types of sounds and belching with a click sound comes out easily. There is a free version with two types of sounds and the full version with twelve kinds of sounds. Play with the burping inside the elevator on the bus and the car pretending to be you who is dropping the noise. Any questions, go to: www.mauriciojunior.org to see more.
Its NOT necessary connection by internet to use the system.