At LeapFrog, buy three apps
and get a fourth app
. (Click the App Center link and add four apps to your cart to see the discount.) Even better, you'll get two free apps when you buy six, three free when you buy nine, or four free when you buy twelve. (You must install LeapFrog Connect to download the apps.) That's one of only a few such offers we've seen from LeapFrog. (We saw two free game apps with the set up of a new device a month ago.) Deal ends January 14.