A cardiologist at Max Super Speciality Hospital in Saket here has developed a smartphone app that can help people know the warning signs of a heart attack in advance and take corrective action. The Heart App developed by senior interventional cardiologist Rajeev Rathi has a small set of questions with multiple options. These are the questions that a cardiologist would ask in a case of suspected heart disease. A patient in any kind of chest discomfort uneasiness or breathlessness can go through these questions selecting the options applicable to him/her. Taking into account all the responses the heart app reaches