Which is best iphone tethering app?

I think you can tether your iPhone with the help of your TOMTOM GPS system device. Tomtom is a device which when used in your vehicle can act as GPS and give you directions about the destination you want to go. You can tether your Tomtom GPS system through Bluetooth, which will allow you to use GPS as hands free to make and receive the calls. You just have to power your phone and TOMTOM program. Then just enter into Blootooth menu of iPhone and connect it to the TOMTOM blootooth menu by just switching on the bluetooth of Tomtom GPS. That’s it now you can use iPhone as a tethered device with tomtom.