The BBC has released an official augmented-reality Sonic Screwdriver app, with four different versions of the screwdriver to choose from.
Michelle StarrScience editor
Michelle Starr is CNET's science editor, and she hopes to get you as enthralled with the wonders of the universe as she is. When she's not daydreaming about flying through space, she's daydreaming about bats.
Created by Australian developer Useless Creations, which specialises in quirky augmented-reality apps (we like the dinosaur one), the app features four iterations of the Doctor's famous tool: the third and fourth (John Pertwee and Tom Baker), as well as the more recent 10th and 11th (David Tennant and Matt Smith). You can also choose from a space background or augmented reality — where you appear to be holding the screwdriver in the real world.
Each of the screwdrivers makes a different sound, taken from the TV show, and you can tilt your phone or slide your finger on the screen to change the pitch, and it even works as a flashlight.