YouTubers test out Ghost Radar, one of the most popular mobile apps for detecting "ghosts." WSJ's Andy Jordan samples the online amateur reviews.

That's far more than the average ghost-hunting app provides, and at $.99, it's a real deal in the paranormal community. During my investigation into Donald Trump's childhood home, M2 was our app ...

Disappearing dates are everywhere these days, and dating apps have gone into full ghost-hunting mode. Coffee Meets Bagel is the latest app to join the fray. It previously distinguished itself by ...