Disclosure: I got this product as part of an advertorial.
This game is designed to be an educational tools for small children, helping them to learn their numbers.
Compatible with iPhone, iPod touch, and iPad. Requires iOS 4.0 or later. Check it out here and get yours too https://itunes.apple.com/us/app/up-and-down/id377641699?mt=8
I received one or more of the products mentioned above for free using Tomoson.com. Regardless, I only recommend products or services I use personally and believe will be good for my readers.