4 Doubles

Swipe your finger and double 4 times!

Swipe your finger and double 4 times! Once you've found the starting number, you'll have to track your double track four times.

Example: If you find out that the first number is 9.

The sequence will be: 9183672

(9x2=18. 18x2=36. 36x2=72 - 9 - 18 - 36 - 72)

What's New in the Latest Version 1.4.8z