There are loads of different riding apps available, but what do people recommend?
I use (and like) endomondo. Easy to use. Lots of people like Strava but I think a bit more roadie focused...
Got the Garmin Fit one on my iphone and really like it
I use runkeeper on mine... tried endomondo but didn't get on with it for some reason.
i use Map my ride on Android - pretty sure you'd get it for I-phone - its free and is pretty acurite, shows speed and elevation and also share (brag) about routes via facebook - just rememebr if you are starting the route from your house, make sure you don't start recording until you are away from your house and likewise turn off before you get back............
I use runkeeper, find it good.
Although I clearly don't use it much, recently noticed that I had left it running since before xmas, had 2,400 hours of activity logged on it.