Use on your Mac the same access point for tethered access as your iPhone.
Version: 1.0Tether Free is an application written to let you use the Internet on your iPhone for free.
Operating System: Mac OS X
Tether Free uses the same access point for tethered access as your iPhone uses for normal data so no additional charges "should" be incurred.
Tether Free also provides Carrier files for both O2 in the UK as well as ATT in the US.