The short version
No affiliate program is currently active and no affiliate link exists on the site. If that changes, every affiliate link will carry a short visible note beside it, will be marked rel="sponsored" in the page code, and will be covered by an updated version of this disclosure.
Our rule for placing them
If affiliate links are added later, a link will appear only where the calculator's own output demonstrates the saving. Example: the hay calculator shows that switching from feeding on the ground to a basket feeder saves a specific number of bales over your winter — that is where a feeder link may appear, with the math visible right above it. We will not accept payment for placement, alter formulas or waste figures to favour any product, or remove the sources paragraph from any calculator.
Programs we participate in
None active.
This page is published first, so the policy is public before the first affiliate link ships.
Ads are separate
No display advertising is currently active. If ads are added later, they will be covered by updated versions of the cookie policy and privacy policy before they ship. An ad would not be an endorsement; an affiliate link, under the rule above, would only ever be an arithmetic one.
Contact
Questions about this disclosure go to contact.balemath@gmail.com.
Last updated: July 17, 2026.