About Socko

Mark Seeber is a software developer with 9 years of professional programming experience, focused on data-driven financial models. He started socko.io after getting tired of finance calculators that were inaccurate, buried in ads, or both. Every tool here is one he built to be fast, correct, and genuinely useful — with the formula shown and the sources cited.

Why Socko exists

Most calculator sites are slow, covered in ads, and vague about how they reach a number. Socko is the opposite. Every tool runs instantly in your browser, shows the formula it uses, and cites the sources behind any reference data. If a tool gives you a number, you should be able to see exactly how it got there.

How these tools are made

Each calculator is built and tested by hand, then paired with a plain-English explanation of the math and a reference section with sourced data. Read more on our methodology page. These tools are for estimation and education — not financial, tax, or legal advice.

Contact

Questions, corrections, or suggestions are welcome at mark@socko.io.