Apps (or app/ application) is programs/games most likely being downloaded to a smartphone, computer or iPad.
When you first have downloaded an app - there is no way back, you will get a strange love relation to apps like "Angry Bird" and other games/programs. Your phone bill will explode and ruin your whole life.
"DUDE! Look i have just downloaded this app - Angry Birds on my new iPhone"
-OH GOD! You are all ready lost.
"Hey dude! Have you seen my Facebook profile today? My new pic's - I'm using my app called Retro Camera. I FUCKING LOVE MY Apps"
Yeah, you have posted like 30 pictures today. Ten of your dog. You have a serious addiction man!