It calculates in a couple of clicks, the number of extra chicks per housed hen (and the extra income) when improving different parameters like hatchability, fertility and settable eggs for poultry. The App uses standard published data for Hubbard JV15, Ross 308 and 708, Cobb 500 FF, ISA, HyLine, Lohman (White and Brown), BUT 10, Hybrid converter and Nicholas 700. By selecting genetic line and using sliders to get your actual number, the App will compare your production to the standard, and it will predict the outcome on chicks/housed hen, of any change in management impacting settable eggs, fertility or hatchability.