BallparkIt™ is an educational calculator for learning trigonometry. In quizzes ranging from 20 to 120 seconds, players can test their trigonometric skill by solving right triangle problems. Each question has four multiple-choice answers and poses either an angle or a side length problem. Players must find the missing component and select that answer.
The BallparkIt™ calculator, accessible from an icon in the upper left corner of the question display, lets players tap the screen in order to input values: a trigonometric function argument, a numerator, a denominator, or a multiplier. However, use of intuition allows for a higher score, and the player is encouraged to ballpark the answer.