This app is designed to simplify the calculation process of species diversity to get Shannon-Wiener Diversity Index. Additionally it also provides Species Richness and Evenness in a single button click. The user only have to enter the number of individuals recorded for each species present. This app will be useful for the professionals and students who work in the fields of biology, ecology, zoology and conservation. It is also simple enough to be used by the ordinary user who is interested in nature.