iPhone Screenshots


Trick your friends with a ‘detector’ that you secretly control.

Press the screen harder to control the readout and realistic 'geiger-counter' sound.

Use it on your friends to measure their style, intelligence, and wit.
Wave it around when you ‘detect' BS, bros, or sheer brilliance.
Detect engrams, elronds, megafaunas, and more.

It’s amazing what your phone can detect!

Works on old iPhones, too!

The secret:

The readout is controlled by measuring the pressure on your 3D Touch screen (6s+) or the size of your fingerprint (iPhone 6 and below)

TIP for older phones: lay the length of your finger against the screen to get up to and above 100%!

Edit the labels to whatever you like, or leave them blank for versatility.

Have fun!

What’s New

Version 1.0.5

- Fixed audio! It clicks nice and fast again, just like it used to.
- Added preview video to app store listing

Ratings and Reviews

just me and nobody else! ,

best prank app out there

This is a silly and fun little app. Fool your friends, impress your lovers, make fun of the gullible. Best $1.99 I ever spent.


Bryan Wu
16.7 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2017 Bryan Wu


  • Family Sharing

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

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