Rise of the Planet of the Apes iPhone

The test is as simple as it is revealing: the numbers 1-9 appear on the screen in random positions, and then are quickly covered. You must remember their positions, and then touch the squares in numeric order, in order to pass to the next round. A number is added for each round, so after several rounds recreating their proper positions becomes quite a challenge -- for humans, that is. Studies show that young chimps outperform adult humans in this memory test.

To play the app, you must first select one of three skill levels -- Easy, Hard, and Ape -- which determine how long the numbers are displayed. The most difficult level, Ape mimics the speed a typical primate can accomplish the task.

In addition to the game, the app offers access to the latest content about Rise of the Planet of the Apes, including the theatrical trailer, movie tickets (when available), and the “Apes Will Rise” YouTube channel. You can also learn more about the history of the tests that measured apes' surprising intelligence.