Privacy policy

Effective October 12, 2026.

NorthLedger Tools ("we") runs this website as a set of static pages hosted on GitHub Pages.

What we collect

Nothing. The calculators run entirely in your web browser. The numbers you type are not sent to us or stored anywhere. We do not use cookies, analytics, advertising, tracking pixels or third-party scripts.

Hosting

Like any web host, GitHub, Inc. may record technical information such as your IP address when it serves these pages, for security and operations. See the GitHub Privacy Statement.

Purchases

Links to our spreadsheets go to Gumroad. If you buy, Gumroad processes your payment and shares with us what is needed to deliver your purchase and support you (such as your email address). See Gumroad's privacy policy. We use that information only to deliver and support your purchase and do not sell it.

Third-party apps

If we use platform tools (for example, to publish our own images to our own Pinterest account), we access only our own accounts and do not collect visitor data through them.

Contact and changes

Questions about this policy can be sent through our Gumroad store page. If this policy changes, the updated version will be posted here with a new effective date.