The Particulate Matter App is a free Android application developed by ChilliBits. It is designed for monitoring one or several sensors in a network of particulate matter sensors. With this app, users can view and track sensors worldwide that are registered in the network. The app allows the addition and monitoring of any number of sensors, providing real-time data on particulate matter levels.

One of the key features of the Particulate Matter App is the ability to compare sensor data. Users can easily compare the readings from different sensors, enabling them to identify variations in particulate matter levels across different locations.