I have just discovered a wonderful app for toddlers. It is Monkey Preschool Lunchbox. My little one just loves playing the games. There is matching, counting, puzzles, and color and number identification. It is really great and educational for these young little minds. And, if you need a few minutes to yourself this is a great tool as well...they'll be entertained so you can get something done.
You can download it from the App Store for just 99 cents!