GRETA is a free Android application developed by Studi Cognitivi that aims to provide a comprehensive tool for mental health therapy. The app allows both the therapist and the patient to work together even outside of the session. It helps the patient to perform exercises, remember important session contents, monitor their own well-being, stay in touch with the therapist, and be more involved in their own therapy.

The app has a user-friendly interface that allows easy navigation, and it provides various features such as a mood diary, an exercise planner, and a section for notes. It also offers a chat function that enables the patient to communicate with their therapist. With GRETA, the therapist can monitor the patient's progress and customize the treatment plan accordingly. Overall, GRETA is an excellent tool that can enhance the effectiveness of mental health therapy.