Oh my god - this is the app that all blokes (and some woman) need...

Where / when / how can we get it (+ do we need a jailbreak device) - I have an 'IPHONE 3G S', which I don't beleive those clever chaps have managed to jailbrake, yet. (doesn't usually take people long)

Amazin' app - could I have a license / instructions how to get it on.