According to this CNET review of Kidzui what you get is a special web browser that will only allow your kids to access approved content. There is a free sign up and the enhanced service will cost after that.
The company will offer parents a free membership, or a premium membership of $4.95 per month or $49.95 per year. The premium membership allows extras such as personalizations.
To me as a parent this sounds like it would be worth it to pay and especially worth it for free! Right now my kids are too young to get into stuff that is inappropriate but in the next couple of years they will be at that tender age where they can get to stuff but might not know enough to close the page if it is inappropriate.
For more information see Kidzui.com
