Shake-Phone is a free Android game developed by oldfool in the Action category. It is a simple game that tests your hand speed and endurance. The game doesn't require any tutorial and you can easily get started by shaking your phone.

Apart from testing your hand speed, Shake-Phone can also be used as a fitness tool to exercise your hands. If you can keep up the speed of shaking, you can get a high score and challenge your friends. The game supports charts, which allows you to compete with global players.

Overall, Shake-Phone is a fun game for those who want to test their hand speed and endurance. It's simple, easy to use, and a great way to challenge your friends.