Affiliate disclosure

RationMath plans to earn money through affiliate programs. When you buy through an affiliate link, the seller pays us a commission at no extra cost to you.

Right now, none of the links on this site are affiliate links. When that changes, this page will be updated and affiliate links will be clearly labeled where they appear.

Commissions will never affect rankings. Products are sorted only by the formulas in our methodology, and every product we track is listed whether or not it has an affiliate program.