Stud finder apps claim that they work like real ones. But are they comparable? Here is a breakdown as to how they operate and if they are really worth trying.

Android users can try Magnetic Stud Finder or Stud Finder (99 cents), while StudFinder Professional is available to iPhone users for $3.99.

Stud finder apps use a magnetometer in the phone to detect metal. Many handymen prefer a density-reading stud finder, especially for more valuable projects like mounting a 65-inch TV to your wall.

Think of Walabot DIY as a really fancy stud finder -- only instead of turning on a light and beeping, Walabot DIY uses your Android phone to show you what is behind the wall, and in the case of ...

Using a stud finder or stud finder app are foolproof ways to find wall studs, but you can find a wall stud manually with code measurements, knocking, and more.