Air Sentinel is a free, easy-to-use app that can be used by anyone to keep an eye on the skies in their area. It works by monitoring for RID signals, which are a type of communication that many drones use to transmit data.

Once a drone is detected, the information is transmitted to the Air Sentinel cloud, where it is stored and made accessible to users on the website.

The app can be used by individuals, private companies, public authorities, universities, and research institutions. It is intended for users in the United States and Canada, and works on most mobile devices.