Terms of Service

These terms are written in plain English on purpose. By using The Lean Stack, you agree to them.

What this site is

The Lean Stack publishes free calculators, guides, and reviews related to building an online business. Everything here is for informational and educational purposes only. It is not professional financial, legal, tax, or business advice, and shouldn't be treated as a substitute for advice from a qualified professional who knows your specific situation.

Calculators produce estimates, not guarantees

The tools under /tools are meant to help you think through costs and revenue scenarios. Their output is an estimate based on the numbers you enter and publicly available pricing at the time it was written - it is not a guarantee of what you will pay or earn. Software pricing changes, and actual results from any business or marketing activity depend on far more than a calculator can account for.

Affiliate relationships

Some links on this site are affiliate links, meaning we may earn a commission if you sign up or purchase through them, at no extra cost to you. This is disclosed in full in our affiliate disclosure, and it does not change our editorial opinions.

Acceptable use

Use this site lawfully and don't try to disrupt it - for example, by scraping it abusively, attempting to break its security, or using it to distribute malware or spam. Content on this site (text, calculators, guides) is ours or licensed to us; you're welcome to link to it, but don't republish it wholesale without permission.

No warranty

This site is provided "as is." We work to keep information accurate and up to date, but we make no guarantees that content, pricing references, or calculator outputs are complete, current, or error-free at any given moment.

Limitation of liability

To the fullest extent permitted by law, The Lean Stack and its operators aren't liable for any losses or damages arising from your use of this site or reliance on its content, including decisions made using a calculator or acting on a review or guide.

Changes to these terms

We may update these terms occasionally. If we do, we'll update the date at the top of this page. Continuing to use the site after a change means you accept the updated terms.

Questions? Contact us. See also our privacy policy and affiliate disclosure.