Dynamic Visual Acuity Tester is an Android game developed by infinitysoftware.jp. It is a free game that allows you to measure your current dynamic visual acuity by answering a series of questions. The game consists of four types of problems that aim to improve your accuracy, reflexes, and explosive power.

The first game is the Instant Calculation Game, where you have to quickly calculate the numbers that appear on the screen. The second game is the Delayed Rock-Paper-Scissors Game, where you have to lose in a delayed rock-paper-scissors match. In the Image Recognition Game, you have to guess the image being displayed. And finally, in the Reflex Game, you have to shake your Android device in the direction shown on the screen.

Please note that the app requires certain permissions. It has full internet access for displaying ads and also requires access to network status to check internet connectivity. It is important to be cautious and not shake your Android device too forcefully. The app provides an estimate of your dynamic visual acuity age, but it should be considered as a rough guideline.