iBlizzard is hands down the best snow simulator on the iPhone and iPod Touch.
Relax, light a fire, and watch the snow fall outside your virtual window.
* Use the touch interface to interact with the snow.
* Choose from 6 different window frames.
* Choose from 3 levels of snow - Light, Flurries and Blizzard.
* Turn the device and watch the snow fall with gravity.
* Use your photo for the background.