I want to know does any solution exist to add a circle around the cursor when I click on the screen?
I have found PinPoint for OS X. This is what I asked for.
Wrt PinPoint- this application is available from the Apple App Store. The price is, today, 4.99€ (that translates to about 5.5USD). I use this application myself; is highly customisable, and quite useful on large screens (I have a 27" iMac) in order to find the cursor. You may define a keyboard shortcut to enable/disable PinPoint. Just a comment: when capturing a window on the screen, disable PinPoint first: if not, you will capture the "circle" itself around the cursor.