Intertisement helped Mechanism Digital with the development of this free Heart Cam Augmented Reality app. 

HeartCam is an Augmented Reality heart viewer that creates the startling effect of seeing someone’s heart beating through a hole in their chest. The effect tracks to the marker’s position and size. As you view the open cavity from different angles, heartbeat sounds get louder the closer your device views the heart.

Attach the provided Augmented Reality marker to a string to easily hang around your friend’s neck, or for the best effect, print the marker on an Iron-on transfer to make an AR t-shirt. Place the printed marker in front of chest and view through device’s camera.

The HeartCam contains three modes. 
Tap the screen to reveal toggle buttons for additional viewing options: Horror, Valentine, X-Ray. 

Horror:
Imagine if your friend had a hole ripped through their chest and you could see and hear their heart beating. Chilling blood and broken ribs frame the cavernous chest cavity appearing as if you can reach inside and tear their heart out!

Valentine’s:
Viewed through a dreamy window into the soul, share a classic, beating Valentine’s heart with the one you love. 

X-Ray:
Get in touch with your inner doctor. X-ray view is a medical/pharma illustration simulating a transparent view through the chest to reveal a more clinical, beating heart.