Disposable camera effect on an iPhone?

I would like the distinct effect given from a disposable camera/film camera on my iPhone 5 photos. Whether that's from a camera app or an editing app. I don't mind. All answers are welcome except Instagram

Added (1). In reply to the charming person that answered.

Because I like the effect quite simply. It's far more interesting.

Why? People have spent years, decades even, improving cameras. Now you want to go and make them look ***?

Not sure exactly what effect you're talking about.
If it's a more grainy image toy're after, then many Photo Effects software will offer that function.
Alternatively, put the ISO setting on your 'phone to its highest setting which will give similar effect.