Introduction The Dyn4cast function was launched purposely to facilitate fast and easy forecast of COVID-19 cases in Nigeria. It was converted to a package and the development version of the package was launched on the 17th of February, 2021 with a single function DynamicForecast. The tenet of this package is to present functions that are easy to implement and use. Over the last five years, additions continue to come up as the need arises and today, there are more than 10 functions that are up mostly in one line of codes.