X-Number Game app for iPhone and iPad

Are you a smart guy ? Do you have a good memory ? Or both ?
Lets prove your ability with the simple numbers of X-Number. Hope you can do it..
With X-Number, these numbers are not as simple as you think. Yet, they dont seem too difficult or complicated. They just present a challenge for you. Do you want to try finding your own numbers ?
X-Number is not simply looking for the numbers in ascending order. It challenges you with many new game types with different levels of difficulty. Try starting with a search by accretion or challenge yourself to find out the even or odd numbers. Or you can try with your Math ability to find the prime number. . .
And these are more challenges in game for you to discover.
The more you play, the more absorbing..
It becomes. . .