ZAGG offers the Zagg iFrogz Privacy Covers for Apple iPhone 4/4S for $9.99 with free shipping.

What makes this deal hot:
You save $10 off the retail list price. That's the lowest price we could find currently.

What this does & Why you need it:
This privacy screen filter allows you to see the screen while anyone off to the side will see a black screen. This also protects the screen from dust, dings, and scratches.