Bump

Want to share photos, recommend a song, or suggest an app to a friend? Bump it to them. Bump is a cool little freebie that uses geolocation and your phone's accelerometer to let you fist-bump two phones together to transfer data between them. It's available in both Android and iPhone versions.

Note: This link takes you to PCWorld's Android App Guide, where you can download the latest version of the Android software.

--Robert Strohmeyer