Update for new version. Giving it a mid-range, "partly cloudy" rating.
Crash bug fixed, but still no prefs; cannot turn off annoying clicks/sounds, which makes it useless when you want to play in a situation where others dont want to hear your game and you dont want to completely mute your device.
Not a young childs game! Basically, this is a speed version of the old Concentration style card game where you memorize a numbers position at a glance and then find it on a maze. The faster your time is, the more "improved" supposedly your memory has become. Dont expect it to teach very small children anything but frustration. Older kids might like the challenge, though.
Ohhhdear about Next - Numbers