Anas Rabja

Anas Rabja is the founder and editor of RabixAI. He started the site on a single, stubborn conviction: the everyday math people look up — a monthly mortgage payment, a percentage, a body-mass index, the days between two dates — should be free, instant, and honest about how it reached its answer. He builds the calculators, writes and edits the guides, and is responsible for the standard every page on this site is held to.

What he works on

Anas designs and codes each tool on RabixAI himself, in plain client-side JavaScript so that nothing a reader types ever leaves their browser. Before a calculator is published he tests it against known reference values — worked textbook examples, government and financial-institution figures, and independent spreadsheets built from the same formula — and then publishes that formula on the page so any reader, teacher, or accountant can check the working by hand. The finance and health tools, where a wrong number actually matters, get the closest scrutiny.

Editorial responsibility

Every guide and tool description is written or reviewed by Anas before it goes live, and the finance and health pages carry a visible "built & reviewed" byline so you know a person — not an anonymous content farm — stands behind the numbers. He revisits these pages as conventions, rates, and reference figures change, and corrects them when a reader writes in with a better source. Reader feedback at hello@rabixai.com is read and acted on personally. The full process, from where formulas come from to how corrections are handled, is documented on the methodology page.

Selected work

A few pages that show the standard the rest of the site is held to:

• The Minimum Payment Trap — an original study that simulated credit card payoff month by month instead of quoting third-party figures, with the method published so anyone can reproduce it.
• Debt Payoff Calculator — avalanche vs snowball compared side by side on the same debts, with the per-month schedule shown rather than just the totals.
• TDEE Calculator — energy expenditure built on the Mifflin-St Jeor equation, with the activity multipliers and their limitations spelled out.
• How Compound Interest Grows Your Money — the guide behind the compound interest calculator, with worked examples a reader can re-run in the tool.

The honest disclaimer

Anas is a builder and an editor, not a licensed financial advisor, doctor, or tax professional. RabixAI's tools and guides are educational — they show you how a standard calculation works and let you run the numbers yourself. They are never a substitute for personalized advice from a qualified professional, and for any decision that genuinely matters you should confirm the figures with one. See the Disclaimer for the full picture, and the About page for how and why RabixAI is built.

Contact & elsewhere

Questions, corrections, or a tool you wish existed? Email hello@rabixai.com or use the contact form — it reaches Anas directly. You'll also find him on Instagram at @anasrabja, and RabixAI at @rabixai.