Downloading OddOrEven 1.1.1.1 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the free program is Skynergy. We recommend checking the downloaded files with any free antivirus. The software lies within Education Tools, more precisely Science Tools.
From the developer:
OddOrEven is a simple math's tutor to teach your child the difference between odd and even numbers. OddOrEven has a cheat sheet that your child can use in the beginning to see which numbers are odd and which numbers are even. This cheat sheet can be hidden once your child is proficient enough to do the test without having to reference back to the cheat sheet. Do as many odd or even quiz questions as you want to.
You may want to check out more software, such as StatPlus 2007, Adding Machine or QPlot, which might be similar to OddOrEven.