Lie Detector Finger Prank is a free app developed by HD Art Wallpapers for Android devices. As its name suggests, it is a prank app that simulates a lie detector test. It's a fun way to joke and prank with your friends, but it's important to note that it's not a real lie detector.

The app features a prank mode for rigged lie detection, where it analyzes what you say and displays either TRUTH or LIE. It also simulates using a polygraph and has a realistic computer voice. The lie detector and truth polygraph functionalities are included, making it a fun way to spend hours with friends.