by Open Garden
Download this app if: you want to share your mobile Internet connection across all your devices.
Open Garden shares Internet connections between multiple phones and tablets.
No root access is required. It is similar to a Wi-Fi hotspot, but it uses Bluetooth and Wi-Fi Direct.
To use it, install it on both your phone and your tablet, so they can connect.
Open Garden does not work on Android...
Potential growth — Seems like this has lots of potential. Just hope the carriers don't clamp down on it. It's like tethering but without the cost/issues surrounding that.