I have a 4G LTE Android phone and was thinking of switching to the iPhone 5, but then realized that the tethering app I've been using (FoxFi) doesn't exist for the OS X ecosystem. I use about 1 GB of my unlimited data plan each month for tethered connections while I'm out. These are usually very important connections for me, as I have to quickly access a remote server and change code, compile, and restart it, view a file that doesn't open on the phone, or write a longish email on the laptop and send it. But there's no way I would pay for this given the, literally infinitely, small fraction of my data plan it consumes (and I don't even use 3 GB in an average month). Is there an alternative that works on non-rooted iPhones?