Approximator Line is an application which allows to synthesize approximation function of one argument. Both coordinates of known points or mathematical expression can be used as input data. The application uses evolutionary algorithm which allows to find more optimal results. The enhanced evolutionary algorithm allows to avoid long-time hitting to local maximum. In few hours the application can evaluate milliards of combinations with using of reasonable number of input data points and on contemporary computer. Approximator Line uses multithreading that can help to utilize maximum computation power.