Pocket-Lint: As many of us are still in the grips of the big freeze, or "snow chaos" as the newspapers like to call it, getting out and about can be tricky. No one wants to be caught in a blizzard or sliding around on the ice like a particularly uncoordinated Z-lister on a celebrity skating TV show. That's why it's a good idea to check the weather before you go out to see what's waiting for you outside the front door. Apps that let you check the weather are a godsend in these chilly times, but which are the best? We've put together a list for all the iPhone users out there.