Choose a secret number from 1 to 63. The robot will ask some questions and finally tell you the number you chose. When you are ready, you can challenge the robot to tell you your secret number. Text to speech is used to reinforce auditory discrimination skills. This app contains no ads. No personal information is gathered. There is a quit button so the app will not run in the background when you stop playing. State Standard: Use mental arithmetic to find the sum of various numbers.