"age of Ears" is an application for measuring the highest frequency that you can hear. While you keep touching the center of the screen, the frequency of a sine wave sound gradually increases from...
"Feng shei Loupan Compass" provides a three-dimensional 64 points loupan designed for professionals of feng shui and people aspiring them. "Feng shei Loupan Compass" is not a mere replica...
“Dog Training Sound Set” is an application that provides the three sounds necessary for a professional trainer to train a dog. Since the application has been designed so as to display the screens...