Last updated: 11 August 2026
All calculators on this site run entirely in your browser. The numbers you enter are never transmitted to, stored on, or visible to our servers. Closing the page discards them.
We use privacy-respecting, cookie-free page analytics (page views, referrer, country, device type) to understand which tools are used. We do not use advertising trackers, we do not set cookies for analytics, and we cannot identify individual visitors from this data.
If you join our email list, your address is stored by our email service provider and used only to send the content you signed up for. Every email contains an unsubscribe link. We never sell or share your address.
Toolkit purchases are processed by our merchant-of-record platform (e.g. Gumroad or Lemon Squeezy), which handles your payment details under its own privacy policy. We never see your card number. We receive your email address for product delivery and support.
You may request access to, correction of, or deletion of any personal data we hold (in practice: your email address and purchase record) by writing to our contact address. We answer within 30 days.
If this policy changes, the new version will be posted here with an updated date.