Repo for hosting the app @ https://gist.github.com/globalpolicy/46b98b197aa01f4ddec9e70701aa7de0
I only realised I could've just pushed the app here instead of to GitHub Gist.
So, here it is.
Original article can be found @ http://c0dew0rth.blogspot.com/2020/03/realtime-covid-19-spread-modelling.html