Marcelo Leite has introduced Did I Click 1.0 (didiclick.wordpress.com), an utility for Mac OS X (10.8.2). It costs US$0.99 and is available worldwide through the Mac App Store in the Utilities category.
Did I Click provides visual and audible feedback for your mouse clicks. You’ll see, and optionally hear, a target effect on the cursor right after the click. Users can show visual feedback for left and right clicks, choose from small, medium and large pointer sizes, set the visual effect duration, set custom colors for left click and right click, and more.