There's no denying that peeking at someone's phone will tell you a lot about that person. A look at his or her collection of apps might hint at whether we're dealing with an obsessed 'grammer, an organized over-sharer, or a serial dater. But, can it help us accurately predict someone's age? Maybe. If Candy Crush is your go-to game or you prefer to share information on Facebook versus Twitter, we bet we can guess how old you are. (And, if you can't really remember life before Snapchat, we can definitely guess how old you are!) Take this quiz to find out your iPhone age — all based on your apps. Hey, no judgement.