BW Unical has been developed to ease the calculations of Uniformity and Coefficient of Variation of body weights of Layer Birds. The app inputs the body weight of the sample of birds, and returns the mean body weight, standard body weight, uniformity and CV %. It can be used for most of the commercially reared layer breeds in India. This user friendly app allows editing of the input body weights and gives an option of sharing the detailed result or even save it as a pdf file.