‘Cardiac pacemaker app provides a sneak peek into the amazing pumping organ of the human body – the heart. There are seven pages in this app. 1. Full heart introduction. 2. Half heart introduction. 3. Explode of chambers. 4. Blood flow of heart 5. Node of heart 6. ECG of heart 7. Links ‘Cardiac pacemaker’ app explains the external and internal structure of human heart through the simulation 3D model to improve the comprehension of the topic. The user can interact with the 3D model by tapping the model and getting acquainted with the particular part of the human heart. Tapping the model displays the name of the part and also the simulation module is appropriately supported with in depth information about each external and internal structure part. The app ‘Cardiac pacemaker’ also updates the health conscious users to ascertain the variation in the heart rate with the kind of physical activity by exploring the ‘ECG’ section. All in all ‘Cardiac pacemaker’ is an excellent and comprehensive learning tool in the hands of the wide spectrum of users.