One2Nine is a free puzzle game for iPad, iPhone and iPod touch.
The aim of the game is to arrange the tiles in numerical order from 1 to 9.
It's unique because you solve the puzzle by rotating and shaking your device.
The number of rotations and shakes required to solve the puzzle increases with each level. Because each level is randomly generated its solution will be different every time so you can continue to enjoy playing One2Nine even after you've completed all of the levels.

Instructions
There are 3 ways to move the tiles - You can rotate your device by 90° clockwise, rotate your device by 90° counterclockwise and shake your device. Rotating causes tiles to move up, down, left or right. Shaking causes tile to rotate clockwise or counterclockwise around the center. If rotating by 90° clockwise causes rows of tiles to move up or down then rotating by 90° counterclockwise will cause columns of tiles to move left or right and vice versa.
It's up to you to work out which direction the tiles move in when you rotate and shake your device so it might take a few wrong moves to figure out what's going on before you can start solving the puzzle.

In-App Purchases
Display the Solution: Stuck? Don't believe a level can be solved? With this In-App Purchase a solution for every level of the game will be displayed on the Help screen.
Remove the Adverts: Don't like adverts? Tiles too small? With this In-App Purchase not only will you no longer have adverts displayed on the Game screen but the tiles will also be bigger.