Twitter
Bacon Reader for Reddit, best way to browse Reddit on a phone.
Tapatalk for The Siccness, used to be one of my most used apps, now rarely gets logged in to lol
Spotify, great for music in the car, got that $5 college student plan for no commercial Spotify and Hulu+ all in one.
Ticketmaster, so I can just use my phone to get into concerts and sporting events, instead of printing tickets.
Netflix, HBONow, and Hulu for those times I'm stuck somewhere for hours.
Final Fantasy Brave Exvius and Mario Run for when I'm out and feel like playing a game.
Battle.net Authenticator to keep my Blizzard PC games safe.