Themathsfactor.com is a legitimate website. It has received positive reviews from parents and educators, with many praising its effectiveness in improving children's math skills. The site offers a 21-day free trial and a 14-day money-back guarantee on the first payment, which adds to its credibility. Customer reviews highlight significant improvements in children's confidence and performance in math. The site is also trusted by schools and has a 4.9/5 star rating on Facebook reviews.