Editorial Policy

SopidoCalc aims to publish calculator pages that are useful because the method, assumptions and limitations are visible—not because the page is long or optimized around repeated keywords.

Research and source selection

Calculator formulas and factual claims should be derived from first principles or authoritative references appropriate to the topic, such as government agencies, standards bodies, textbooks, peer-reviewed literature or official data providers. Competitor sites can be studied for usability and topic coverage, but their wording, code and distinctive design are not source material to copy.

Calculation and content alignment

The formula described in the article must match the implemented calculation. Worked examples should be reproducible by the calculator using the stated inputs. If code changes, the example and explanation must be checked again.

Automated QA

Automated checks are used for known answers, boundary values, invalid inputs, precision, unit conversion, broken links, metadata, canonical URLs and representative accessibility and layout behavior. Automated success is evidence about implementation, not proof of professional or human subject-matter review.

Human review

Where a page is marked as human-reviewed, that status should reflect substantive checking by a real person. SopidoCalc must not invent authors, reviewers, credentials, studies, testimonials or first-hand experience. Consequential and time-sensitive topics require stronger review and current sources before they should be treated as fully approved.

AI-assisted work

AI may assist research organization, drafting, code generation or QA, but it does not remove the need to verify formulas, examples, sources and claims. The goal is not to make machine-assisted text look human; the goal is accurate, original and useful content.

Updates and review dates

Time-sensitive calculators—such as tax, salary, regulatory, currency and data-backed tools—should be reviewed when inputs, laws, provider terms or reference data change. Stable mathematical pages still require regression testing when the calculation engine changes.

Corrections

Substantive errors should be corrected promptly and affected tests rerun. See the Corrections Policy for how to report an issue.