The "Cats per click" determines how many cats you get when you click the cat icon. The “Cats per second” determines how many cats you get each second. Click on the shop button to open up the shop. When you press a button in the shop, if you have enough cats, it will make your cats per second or cats per click go up. Click on the x to close the shop.
This is basically a better version of my other project, money clicker. I used the pricing from Coltroc’s game candy clicker 2. Music is from YouTube. Post your high score in the comments. Have fun!! =D