Tilt Calculate - Mental Arithmetic Publisher: digitalsirup GmbH Genre: Educational Released: 16 Feb, 2010 Size: 816.9 KB Price: $1.99 Click here to request a review of this app App Store Info Description Tilt Calculate is a learning game that allows you to improve the speed and accuracy of your mental math. Highlight the correct numbers to solve the arithmetic problem by tilting your device. Screenshots Screenshot 1 of 4