The NumberKey does just that. The NumberKey turns your iPhone/iPod touch into a portable numeric keypad so you can use it at home, office, or even when you're on-the-go.
Here are some key features of "NumberKey Free":
· Black and white skins.
· Connect easily and automatically with Bonjour technology.
· Even when you are out and without access to a Wi-Fi base station, you can easily create a new network on your Mac and connect it to your iPhone/iPod.
· Use with your Apple Wireless keyboard conveniently.
· Compatible with iPhone and iPod touch
· iPhone OS version 2.2.1 or later