around me is a great app, it finds restaurants, stores, pretty much anything that is around you! perfect for when i'm in a new area or can't decide where to eat out at :)
instagram is a must have! i love the filters that is built into the app and seeing everyone else's cool photos.
fusioncam is also a cool photo app. you can blend two photos, which can create some awesome photos!
sketches 2 scrapbook is a wonderful app for any scrapper. it gives you a ton of sketches to give you inspiration for your next layout.
and my guilty pleasure-stylish sprint. this game is addicting! beware!!