GetPregnancy Detector Prank Android App Free. Itis to determine whether a woman is pregnant or not. Pregnancy detector prank is easy to use and scans or detects your pregnancy. You want to know if you are really pregnant or not? Feel some early pregnancy symptoms? If your urine or blood contains a hormone called human chorionic gonadotropin, it means you are pregnant. It is produced right after a fertilized egg attaches to the wall of a woman’s uterus. Pregnancy Detector Prank is perfect for pranking. You just have to place your finger on your smartphone and you have the opportunity to prank your mom, friends or even your significant other!