There is an app called actifit and they have a profile on steemit,well the app is not an app directly meant for

heart disease but the app is made to help you stay physically fit by encouraging you to do excercises and

even give you rewards for staying fit,when someone is doing regular excercise it can make the person to be

able to boost their immune system and when an immune system is strong it could make the person to

have the ability to fight any form of disease or prevent any form of disease...