This is a simple app that deploys to a Heroku dyno to work on Universe@Home, supporting free plans. Be aware that this currently contributes to my account.
Click here to see how many instances are currently contributing to Universe@Home through this app. (the dashboard is AKA Boincoku)
You can look at the code for the dashboard here.
These things can be improved. I may add them in my spare time, but feel free to send a Pull Request.