I can confirm that Wunderground has a app for the iphone
I can also confirm that Wunderground has an app for the iPhone.
However, you can't see all of your weather station data (at least as far as I have figured out yet).
It will show the following:
Temp, Wind Chill (Feels like), Wind, Humidity, Dew Point, Visibility, Pressure, Gusts, and the location of your PWS.
It does not show daily rain, rain rate, UV, Solar, etc.
Also, I wish it could show graphs of those.
If someone knows differently, I'd love to hear.