Start the scan your fingerprint and say something to see if it is true or a lie. Place your finger on the scanner area and allow scanner begin. Laser Xray will go throught your finger.
Use the prank features to fool everyone with this fake lie detector test.

Instruction for prank mode:
Start by touching and holding friend's finger down on the scan area. First time you see a random result. On result screen tap on the left side of button for “False", and on the right for "True". Pressing the restart button will give a random result.

This application is only a prank trick for fun. it's not a real polygraph lie detector.

Ratings and Reviews

3.3 out of 5
440 Ratings

440 Ratings

surf#9 ,


This app is mostly right but some have been way off and i even no the answers to some that I said. This app also I think just follows a pattern!

No name sorry 😂 ,

4 stars

I read other reviews and people ar thinking that this lie detector is giving real resultats but its only a prank you must read instruction before you leave rate. So i think that you guys are not rating fairly. From me 4 star because its not very comfortable to use it with friends.

Bella Da QUEEN XD ,

I love it it works so esale

This app is so but slapping i hate it is much my mum-may said i cant have it so she but slap meh so hard i hit her in the face with owner cat and then she did that to meh and meh got a scar p.s. ima noob not on rolblox in rela lif!!!!!!!!!

App Privacy

The developer, Denis Batishchev, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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