The app will collect your names and the scores each person achieves in the game. This information is then sent to the device you are casting to (if any), which uses it when rendering the webpage at olliechick.co.nz/scumgraph-cast.
This information is not shared outside your device and any device you cast to, and will be discarded when closing the app.
You can contact the development team at scumgraphapp@gmail.com.