Showing my age here, but this reminds me of Math-a-Magic on my old Magnavox Odyssey2. Agree with the auto level up... Would also like the option to completely clear the answer when you get it wrong. Can't tell you how many times I've missed an answer twice because I mistyped the first time, getting one digit right, then tried typing the entire answer again. The option to hit an "enter" button would be nice, too, so you can confirm your answer. It's too easy to make a typing mistake on iPhone keyboards.