Privacy policy
Last updated June 2026
The short version: our calculators run entirely in your browser, we don't sell your data, and the only personal information we collect is your email — and only if you choose to subscribe.
What the calculators collect
Nothing. Every Sellculate calculator runs locally in your browser. The prices, costs and numbers you type are never sent to us or stored on a server — they stay on your device.
The newsletter
If you subscribe, we collect your email address to send you marketplace fee updates and new tools. We use Kit (ConvertKit) to manage the list and send emails. You can unsubscribe at any time using the link in any email, and we never sell or rent your address.
Third-party services we use
- Cloudflare — hosts the site and may process standard request data (like IP address) to serve and secure it.
- Kit (ConvertKit) — newsletter sign-ups and email delivery (only if you subscribe).
- Affiliate partners — some outbound links are affiliate links. If you click one and make a purchase, that partner may set a cookie to credit the referral. We may earn a commission at no extra cost to you. These links are disclosed where they appear.
Cookies & tracking
We don't use advertising or cross-site tracking cookies. Affiliate partners you click through to may set their own cookies under their policies. If we add privacy-friendly traffic analytics in the future, we'll update this page.
Your choices
- Don't want emails? Don't subscribe — the calculators and guides work fully without it.
- Already subscribed? Unsubscribe anytime via any email, or contact us to be removed.
Changes
We'll post any updates to this policy here with a new "last updated" date. Questions can be directed through the newsletter reply address.