You can access the AirSight from your iPhone using the browser, the same way you do from a PC/Laptop assuming that you setup a dynamic IP address and port forwarding on your router for the AirSight. The directions can be found in the user manual – ftp://ftp.x10.com/pub/manuals/XX34A-OM.pdf. There is an iPhone IP surveillance software product called CAVU in the Apple Store that works with most IP cameras, but they do not specifically state that AirSight is supported yet. Give CAVU a try as they have a free version.
If you use an iPhone or Mac you might want to check out iCam ( http://skjm.com/icam ). It is an easy program to use and it is in an “app” for the iPhone.