Privacy Policy

Marginal's calculators run entirely in your browser. Inputs you enter are stored only in your browser's local storage so your last-used values are pre-filled on return visits — this data never leaves your device and Marginal cannot see it.

If you sign up for the email digest, we store your email address to send you the digest and nothing else. You can unsubscribe at any time via the link in any email. We do not sell or share your email address with third parties.

This is a placeholder policy — replace it with a policy reviewed against your actual data practices (analytics, cookies, hosting provider) before launch.