DEVA uses Augmented Reality to visualise air pollution in the user's immediate surroundings. The app shows, on mobile devices optimised for AR, air pollution as floating particles such as spheres, stars, pins or cubes. Pollution intensity can be displayed as clouds in gradients of different colours.

DEVA ingests data from citizen science sensors, official monitoring stations and air quality model data. The app provides detailed sensor information for a variety of pollutants like CO2 (Carbon Dioxide), NO2 (Nitrogen Dioxide), BC (Black Carbon) and PM1, PM2.5 and PM10 (Particulate Matter of size 1, 2.5 and 10 micrometres), as well as humidity and temperature.

Furthermore, the app can record trips and save current GPS positions, thus making it possible to monitor air quality along the route. The recorded data serves as input to the Dynamic Exposure Visualization Dashboard (DEV-D).

DEVA is currently available as an open testing version on Google Play Store. An iOS version will be released soon.

DEVA video presentation

How to use DEVA

1. Download and install the app DEVA on your mobile device from the Google Play Store. Take into account that your device must have Augmented Reality Tracking capability. The app will tell you if your phone is AR compatible
2. Start the app and look around. You will see different environmental data displayed in your surroundings
3. Walk around and search for new sensors and their related measurements. You can distinguish between real-time sensor data and model data
4. If you have a SODAQ sensor, you can also explore the trip recording feature. Proceed as follows: 1) activate your SODAQ sensor, 2) perform a trip on foot or by bike and store the trip data, 3) go to the DEV-D and find your trip along with the environmental data acquired by the SODAQ sensor

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