Terms

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.

Last updated: October 2026.