There is, but you need to be jailbroken (AKA, cracked)... if u still want to do that, only trust SPIRITJB (spiritjb.com) download it open it press jailbreak on it and let it do its magic work... not compadible with ios4... dont even try!! anyways once that is done, go to cydia and search. search up:
MaciphoneBT
not shure if its still there, its not cydia creators fav. program... he might have removed it... once youve downloaded it go on google on your mac and search up
MaciphoneBT compliant for (your ios here)
look around, and when you see a website that says "CYDIAPC: mac iphone BT compliant for ios 1,2,3download" press the picture to download it. no instalation requierd, the next time you turn on your mac there will be a colorfull bluetooth symbol on your dock or finderbar. press it, it will make your screen go gray, and then a loading orb like the vista one will come up. now open up the iphone app (Make shure that your iphones wifi or bluetooth is open (yeah this works with wifi on osx snow leapord server)) and it will send you to the bluetooth section or settings, and it will say "Conect to compliant/mac" press it, your iphone will reastart and you lock screen backround will have a bluetooth pic. on it. unlock your iphone, your mac will go back to normak, and you will be done. this also alows apps like icall (if you have it on your mac AND iphone) to work together. EG.: ihone is handset and mac is keypad and controll. this works with more apps than you think... EVEN EA APPS!!
your welkome! -SHADOW (actual name)