Horrible app!!! for example, the answer to 9 x 6 must be entered 4 press enter 5 enter! This is Terrible! I purchased this for 2 reasons, so my children would not have to look at ads and to have them drill their multiplications. The app requires an enter after each digit! A 2 digit answer must have the ones entered first and then the tens entered. To get a new problem, you again must press "new". This is not intuitive at all and it's a waste of money!!!