E-health applications are methods used by medical practitioners to assess and follow their patients' mental and physical conditions. They may also provide feedback to patients and help them to change their behavior. Our research project aims to propose a mobile application (app in short) for suicide prevention. The principle is to develop a connected tool used by the patient to report about his/her health status. The use of a connected tool at home has the potential to overcome well-known limitations of self-reporting in a clinical context. However, developing an efficient e-health app is challenging, especially for sensible topics such as suicide prevention. The application must be developed carefully (data protection, HMI, ergonomic, question choice) in order to increase its acceptance by both patients and practitioners. Here, we relate ongoing world-wide initiatives and we propose some requirements towards the development of an efficient intelligent-health (i-health) application for suicide prevention.