Often times when I open the VV app on my iphone it freezes up and I CANNOT get it to do anything. I've figured out (over time) that the only way to be able to use it again after it does this, is to delete the app entirely and then download it again. A major pain in the butt. Other times it just gets stuck on one particular page for long periods of time. I would really like to see this improved so it's reliable.