About and method

Last updated: 8 October 2026.

Who publishes this site

SaaS Calculators is published by Rayane Deramchia, an individual based in France. Contact: deramchiarayane@gmail.com. Full legal information (host, privacy) is in the legal notice.

How the calculators and pages are made

The code and the text of this site are written with the help of AI tools (notably Claude, by Anthropic), under the publisher’s responsibility. Claude models also appear in the LLM price table; they are listed with the same method and sources as the OpenAI and Google models, and no provider pays to be listed.

Checked before publication:

• each formula is compared with the source quoted on its page (David Skok, Andreessen Horowitz), and the formula is printed on the page so you can check it yourself;
• 21 automated tests check the formulas, the pages and the usage counter, and a headless-browser test opens every page and compares each calculator’s result with the expected value for its default inputs;
• the LLM API prices were copied from each provider’s official pricing page on 2026-10-07 (dates and sources below); what the calculator leaves out (cache writes, long-context surcharges, tool calls…) is listed under the price table;
• default figures are illustrative examples, not data about real companies.

No rating, review or user count on this site is made up.

Sources

• David Skok, “SaaS Metrics 2.0 – A Guide to Measuring and Improving what Matters” (For Entrepreneurs);
• Andreessen Horowitz, “16 Startup Metrics”;
• LLM API prices, checked on 2026-10-07: Anthropic pricing, OpenAI API pricing, Gemini API pricing. Prices change often: check the provider’s page before committing to a budget.

Report a mistake

A wrong formula, an outdated price, a bug? Write to deramchiarayane@gmail.com.