Terms of use
Maineblock's tools and guides are educational. They are not financial, investment, medical, or legal advice. Verify anything consequential with a qualified professional.
Accuracy
Every calculator states its assumptions and approximations (for example, the t-test power tool uses a normal approximation, disclosed on the page). Results are only as good as your inputs: garbage in, ruin out.
Free downloads
Free templates are yours for any use, including commercial work. Premium templates are sold via Gumroad under Gumroad's terms.
Liability
To the maximum extent permitted by law, Maineblock LLC is not liable for decisions you make using this site.
No automation
Do not use bots, scripts, or other automation to submit survey responses or interact with this site. Automated responses may be removed.
Enforcement
We may block, remove, or disregard content or responses that abuse the site or violate these terms.
Changes to these terms
We may update these terms from time to time. The version posted on this page is the current one.
Last updated: October 2026.