I have an android phone. I don't do any banking or other sensitive stuff on it so I don't have any security apps. I might look into that though. My most used are some games (words with friends, scramble, what's the phrase, trivia crack, soda crush, maleficent freefall, dice with buddies, songpop) and I also use acar for keeping track of my car stuff (iOS equivalent is Roadtrip), Out of Milk for grocery lists, Gasbuddy for checking gas prices, 1Weather for weather, HD Camera in place of the stock camera, Dolphin browser, quickpic gallery, joann's app for coupons, how much thread and quiltcalc for quilting stuff, evernote for keeping track of my craft inventory and patterns, zedge for ringtones, dropbox, pinterest, goodrx for checking drug prices, walmart app for the savings catcher and a few others.