Free app - An expression given to a free, enjoyable activity that occurs spontaneously.

A repository where small programs known as "apps" for Apple devices are distributed. Many apps are free and some cost money.

A software application that has little or no real value.

the green app you keep your money in on your phone. (cash.app)

A person who has been sucked into the consumerist network of the iTunes app store, and obsessively downloads. It's fun, but you realize there's no escape, soon after you're sucked in.

P.S. I am an app junkie

stands for killer application. Used to describe a game/application that really makes a system/computer.

When one of your friends on MySpace or Facebook installs a stupid application like "Send an endangered invertebrate" which then proceeds to hijack their address book and spam everyone.