Heart rate monitor for iPhone?

[Major Fallout]

I fancy a heart rate monitor that works with my iPhone, something that can draw fancy graphs and other information thats of no use.

You know the sort of thing I can use 10 times then put it in the draw for ever.

So what do you use?

Can i get any old bluetooth heart rate monitor or do I need a particular one?

[Major Fallout]

That sounds good thank you I will check it out.