This app allows you to access many functions of the Raspberry Pi including:
> The Inbuilt Temperature Sensor
> The Camera Module
> More...
For more advanced features check out http://rpi.nos.net.nz/remote for the download for your computer.
To get this application to work correctly you need to change a few settings to ensure that the Raspberry Pi can talk over the internet. Have a read through the setup guide at http://rpi.nos.net.nz/remote/setup to get you started.