iCardy detects in real time hidden artificial fibrillation (AFib). AFib is an irregular and abnormal heart beat and is one of the fastest growing heart diseases in the developed world. iCardy consists of a slim patch for continuous heart monitoring and a smart wristband with unique algorithm for analyzing the heart activity. When AFib attack happens it immediately sends to the user information about the problem through an alarm signal or vibration. iCardy Application can send information to a doctor or a family. The device works without Internet connection and is able to detects AFib at invisible stage, faster and more accurately (accuracy rate of 99%) than competitors.