Privacy policy

Updated October 28, 2026

SellerTools Hub is operated by tivonra. Its public website is https://tivonra.com, serving users worldwide. For privacy questions, contact szqmayday@gmail.com.

Your calculator entries are yours. SellerTools Hub calculates results in your browser and does not send your selling prices, costs, profits, package dimensions or other worksheet entries to a calculation server.

Calculator inputs and transfers

Entries are held in memory while you use the site. We do not save calculator inputs in an account, cookies, browser local storage or a financial database. An optional transfer between related worksheets carries only the values you choose within the current session. Refreshing or closing the page clears this in-memory state.

Calculator inputs are not added to page addresses. Tool search terms and category selections can appear in a tools-directory address when you submit the home-page search or follow a category link. Use that search to find tools; avoid entering personal or confidential information there.

Copying and downloading

When you choose Copy result, the site asks your browser to write the result and its assumptions to your clipboard. When you choose a CSV export, your browser downloads a file you can keep. These actions happen only when you request them. Clipboard contents and downloaded files are then subject to your device, browser and any services you choose to share them with.

Accounts, analytics and advertising

This version has no user accounts, email signup, analytics provider, advertising service or affiliate tracking. It does not transmit calculator values as analytics events. There are no optional tracking services to consent to in this version.

If optional analytics or commercial services are added, this policy and the relevant disclosures will be updated before activation. Where consent is required, those optional services will remain inactive until you choose them.

Page requests and server information

Opening a page requires a request to the server that serves the site. That server receives ordinary connection information, which can include an IP address, requested page, browser information and request time. The operator’s server configuration determines whether ordinary request or error logs are retained. This is separate from worksheet entries, which stay in the browser.

The public site is hosted on Cloudflare Pages. Cloudflare processes connection information to deliver and protect the site under its privacy policy. We do not operate a separate calculator server or financial database. Operational log retention depends on the hosting configuration and provider practices; contact us with questions about that processing.

Contact by email

If you email us, your email address, message and any attachments are handled by the email services used to deliver that message. Calculator entries are not automatically attached to emails. Avoid sending confidential worksheet values or unnecessary personal information.

External websites

Official sources and other external links take you to a separate website when you choose to open them. The destination handles that visit under its own privacy policy. We do not send your worksheet values in those links.

Questions and changes

For questions or privacy requests concerning information you send us, email szqmayday@gmail.com. This policy describes the current implementation; the date above will change when its practices are updated.

Also see our terms of use and affiliate disclosure.