Its a ten dollar emf detector that detects electromagnetic frequencies. You have to have an expensive phone to use this. Plus an android. I use a galaxy s4 active. Its like s4 only water proof. You can even record sound, put it on computer and even erase white noise, snap photos and get emf. I also downloaded another app called Ghost Radar Legacy. Its the paid version. It has quantom vox, a frequency transmitter, a comminicater and a radar. Would you say these are better then the ouija board?