Naughty or Nice Face Scanner is a free prank app developed by Kunal Verma for iPhone users. This app is designed to mimic a real face scanner that determines whether someone is naughty or nice. However, it is important to note that this app is purely for entertainment purposes and has no actual ability to detect someone's personality traits.

One of the key features of this app is the ability to record your screen and share it with friends. This allows users to capture their friends' reactions when they believe they are being scanned and receive a naughty or nice result. Additionally, the app offers a fingerprint scanner feature, adding another layer of prank potential.

Using the app is simple. Upon opening it, users are presented with clear instructions. Pressing the left side of the start detection button will yield a "nice" result, while pressing the right side will give a "naughty" result. For the fingerprint scanner, the start detection button is replaced with the show fingerprint scanner option.

It is important to remember that this app is purely for entertainment and should not be taken seriously. Any actions taken based on the results of this app are done at the user's own risk. The developer, Kunal Verma, clearly states that the app has no relation to any real naughty or nice detector and is solely meant for pranking purposes. Users should use the app responsibly and consider the potential consequences of their actions.