Heart Bit Lab is a free prank app available on Android. The app is developed by SARA DANIELA MARTINS JANEIRO and falls under the Utilities & Tools category. It is a fun app that simulates heart rate monitoring with a simple tap on the flash of your device.

Upon launching the app, you are presented with a screen that prompts you to place your finger on the flash. Once you do, the app starts simulating a heart rate monitor, complete with animated graphics and sound effects. It's a great way to prank your friends and family, and it's completely harmless.

Overall, Heart Bit Lab is a fun little app that's worth checking out if you're looking for a quick laugh. It's not meant to be taken seriously, but it's a great way to add some humor to your day.