About Fractum
Fractum is a brain-squeezing app with the intent of having fun with arithmetic and proportions.
The Player aim is to reproduce a target fraction by classifying numbers of a grid into blue and red groups.
The fraction will be reckoned as the sum of all blues divided by the sum of all reds. If the produced fraction equals exactly the target one you win.
The speediest you are the best!
Enjoy.