Authors and reviewers
Reviewed by Gavin Meiring, Lead research and primary author · Doctoral Candidate (Corporate Governance) · Research and drafting assisted by AI
Annual review per page, re-check on formula change, corrections within 5 working days
The specialist reviewer list names a person only after that person approves their own entry, so a subject area does not carry a named reviewer until the approval is given. Figures are checked against primary sources, including the measurement standards published by NIST.
What is checked on every page
Every calculator page states the formula it applies, the constants and conversion factors it uses, and the published source for each of them, so a reader can check the arithmetic without trusting the page. Where a page applies a rule that varies by country, such as tax brackets or pension limits, it names the jurisdiction it assumes.
A page is re-checked when a source standard changes, when a reader reports an error, and on the review cadence stated above. A correction that checks out is made within five working days and the date at the foot of the page moves with it.
Who writes and reviews these pages
Solved is written and maintained by Gavin Meiring, who is the named author on every page and who signs off each formula, worked example and cited source. Research and drafting are assisted by AI, and every AI-drafted page is checked against a primary source before it is published. Specialist reviewers are added to a subject area only once that person has agreed to be named, so this page names no one who has not agreed.
G
Gavin Meiring
Lead research and primary author
Sets the research standard for every tool page, writes the worked examples and method notes, and holds final editorial sign-off on published content.
Gavin Meiring leads research and is the primary author on solved.tools. He holds Masters degrees in International Trade and Business Administration and is a Doctoral Candidate in Corporate Governance.
He brings a financial services and offshore banking background, having worked with international brands including Standard Bank, Old Mutual International, Sanlam and the Virgin Group. He has a particular interest in using technology to drive business growth and create value for clients.
His academic work in corporate governance shapes the method notes on the money and investment pages. Assumptions are stated, sources are named, and every worked example can be reproduced from the inputs given. The same work informs how the site applies corporate citizenship, ESG and CSR principles to its editorial standards.
He is assisted by a research team at DigiBiz, a technology services company based in South Africa. The team handles source retrieval, figure checking and the annual re-check schedule set out in the review policy below.
Doctoral Candidate (Corporate Governance) · MBA · MIntTrade · AdvDip ProjMgt · AdvDip AIBus · GradDipMgt · LIB(SA)
Covers: all
Editorial and review policy
Gavin Meiring leads research and holds final editorial sign-off. Every tool page is checked before publication and re-checked at least once a year and again after any change to a formula, a default or a published figure.
Every calculator page on solved.tools is checked before publication and reviewed again on a schedule. This page states who does the checking, what they check, and how to get a correction made.
What gets checked before publication
The formula the tool implements, the units and defaults it assumes, a worked example with real numbers, and the sources named on the page. A page does not go live until a reviewer has reproduced the worked example from the inputs.
Who reviews
Gavin Meiring leads research and holds final editorial sign-off. Each subject area also has a named specialist reviewer: money and investment, health and fitness, maths and statistics, and technical and engineering. The reviewer for a category signs off its pages. Specialist names are published here once that person has confirmed their own entry, and not before.
Review cadence
Every tool page is re-checked at least once a year, and immediately after any change to the formula, the defaults or the underlying source data. Pages that cite a figure which changes each year, such as a contribution limit or a rate threshold, are re-checked when that figure is published.
Corrections
Send a correction to hello@solved.tools with the page address and the number you believe is wrong. A verified correction is made within five working days and the page records the change date. Corrections are published as corrections, not folded in silently.
How these pages are written
Drafting is assisted by software, and every page is then edited by a person and checked against the sources named on it. Every page also passes an automated writing-standard gate that rejects machine-sounding prose, filler phrasing and typographic tells before it can be published. No page is published on the strength of a generated draft alone. The worked examples are calculated, not estimated, so a reader can reproduce each figure.
What the tools are not
The calculators give estimates for planning and study. They are not financial, medical, legal or tax advice, and they are not a substitute for a qualified professional who knows your circumstances.
Report a problem
Send the page address and the figure you believe is wrong to hello@solved.tools. Corrections that check out are made within five working days.
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