gReact is a mobile application developed by Tcom doo for citizens living in Serbia to report environmental issues present in their locality. Users can submit information and requests for solving ecological problems directly to the Operational Center of the Ministry of Environmental Protection through the app. The application allows users to track the status of their reported problems.

In addition, gReact provides important alerts about weather-related natural and communal events that are significant for the safety of citizens, their property, and the preservation of the environment. For example, users can receive warnings about unfavorable weather conditions, fires, floods, and traffic accidents involving vehicles carrying dangerous materials.

Registered users of the mobile application can also receive current ecological and communal information related to their profile or selected based on their current location. This includes weather forecasts, air quality, water levels, maps indicating newly opened places for waste or hazardous material disposal, and more. gReact is a free app available on Android.