Tap Brain 

Tap Brain is an app developed by Arphix Game Studio that puts your memorizing skills to the test. This game doesn't provide you with a long list of different challenges. Your objective is to tap the colored tiles in the indicated sequence and attempt to get the highest score possible.

The app features a straightforward interface and lacks any display and sound settings (only the windowed mode is available). You can move the game's window anywhere on your desktop and share your scores via email with your friends directly from the app's interface.

After you click the Start button, the app will start showing a sequence of tiles that will light on. You need to tap the colored tiles in the same order. If you click on the wrong tile, the game is over and the app displays your score.

The one thing that doesn't seem to be working is the Score panel which can be accessed from the main menu of the app. Nothing happens when clicking the Score button.

Other than that, not much more can be said about this game. It doesn't bring you multiple challenges; instead, it generates different sequences every time you restart gameplay.

To summarize, Tap Brain is a puzzle game for users of all ages who wish to test their memorizing skills. I think you should try this app on your Mac and see if it's what you need. The game is free of charge, so you have nothing to lose by installing it on your computer.