Forest4Thai is a free Android application developed by the Royal Forest Department, falling under the Education & Reference category and the Books subcategory. The app's primary function is to monitor the border areas and national forests for violations and complaints. It also provides users with the agency's Department of Forestry and phone number to be contacted.

Users can check whether a specific position is located in the forest area or not, including when an offender violates the forest. The app notifies users/complaints directly in case of any violations, such as forest encroachment, illegal logging, or illegal fire. The users can also attach photos of the scene and the location.

The app is compatible with Android 9.0 and is an excellent tool for those interested in preserving the forests and maintaining the ecological balance.