The thesis describes a process of development and implementation of the app for mobile operating system Android which was developed in Java programming language. App generates an encoded signal for a decoding circuit which is able to drive up to nine servo motors simultaneously with one output audio channel. Beside generating an encoded signal, we developed a module to control a robotic arm with two joints and a lift able pen. The developed app allows to alter majority of parameters, which makes app more adaptable to work with different hardware and in different situations. The thesis, beside the app development, describes design of the circuit and how it works, used methods and theory behind, used in the app development and used technologies and tools as well.