This is a pet project of @RedBrogdon, designed to make it easy to see someone's GitHub activity for a given date range.
In addition to being useful to me in my current role as an engineering manager, this app allows me to get hands-on experience with aspects of Flutter that I'm curious about. For that reason, I actively discourage anyone from filing issues or submitting pull requests (I learn by coding, so I'd like to do all the coding!). Feel free to fork it, though, if you'd like to create your own version!