Snowfall by PME Software

This fun app lets you simulate snow falling on your pictures!

Unlike other apps, we use an advanced edge detection algorithm to find all the horizontal edges in a picture and then model snowflakes falling and piling up on top of things. The results are surprisingly realistic and fun!

You can also use the email and save features to share your snow-covered creations with your friends.

Also, you can shake to clear the screen and restart the snow falling.