How can I get an app to motivate me to a healthier lifestyle?

Your family doctor. A physical examination by your family doctor will allow you to discuss this matter with him. He will record your weight, blood pressure and check your numbers like cholesterol and blood sugar. You need to bring your weight into the normal range for your height and exercise daily if possible(minimum 5 days/ week) for 30 mins daily. Self motivation.Goal setting and reaching your goals needs practice.