Foobot is indoor air quality monitor. It can smell the invisible, odorless pollutants within environment and makes them visible through LED display. In one glance, the color and breadth of its glow will let you know whether your air feels more like a forest.
The app mostly works and shows nice graphs of the historical air pollution levels. Two things which don't appear to work: 1. After the app is in background for a few hours, the button to go from overview screen to graph screen stops working. Restarting the app restores the functionality. 2. I've add
