Yay! We were mentioned in this article - How your kids can surf safely with a tablet - on USA Today. Thanks to @JenniferJolly for her excellent article / video, and of course for her due diligence.
There are Web browser apps built specifically for younger surfers. Mobicip is one of the best. The company's Safe Browser — available on both iOS and Android — caters the Web-surfing experience specifically for your child. Any attempts to access unseemly corners of the Web are met with a block screen, telling them they've crossed the line.