Four Seconds - A timer and a simple rule: stop it at exactly four seconds.
ScreenTime for Starry Station - Keeping kids safer online in a few simple taps.
Wikids - An encyclopedia that talks to your kids
KidsWifi - Simply plug in to protect your kids online
DragonBox Numbers - Teach kids about numbers with an easy and fun game
kidrex - totally SFW search engine (or, Google for kids!)