DoodleMaths (7+) 8.5.2 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is EZ Education Ltd.
The program lies within Education Tools, more precisely Teaching Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
DoodleMath (Math for 7+ Year Olds) lets you accelerate your child's progress in Math with an individualized work schedule tailored to their strengths and weaknesses, building their confidence and attainment. With every question your child answers, the application learns more about what they understand. It then builds a work timetable to improve ability and confidence.
You may want to check out more Mac applications, such as eduMap, FRS Money Math or FRS Clocks and Time, which might be similar to DoodleMaths (7+).