FAQ
The Android version will run on any phone or tablet using Android 3.0 or later. The iPhone, iPod touch, iPad version requires iOS 7.1.
No. An Internet connection is only required to read the company's privacy policy in the Android version.
The premium version can be played offline and contains a full set of puzzles. The regular version requires an Internet connection, shows advertisements, and uses a reduced set of puzzles.
No. Some of the puzzles are number sequences that are encountered in everyday life, and are not necessarily governed by an equation.
If you had completed all the puzzles and wanted to play again, or if your score was lower than you'd like because some of your answers were wrong and you want to start from the beginning again.