About the Author

Shannon Patterson

Founder & Lead Developer · LinkedIn · GitHub

Shannon Patterson is the Owner/Member of AYIT Creativity LLC, founded in March 2026, and focuses on practical IT and AI solutions that improve efficiency and simplify complex work. His background includes generative AI, workflow automation, modern data practices, and productivity tools that help businesses create content faster, streamline operations, and make smarter decisions.

ThisCalc was built because Shannon saw too many calculator sites that give you a number without explaining what it means. Every calculator here includes interpretation guidance, formula references, and honest limitations - especially for finance and health topics where accuracy matters most.

Before founding AYIT Creativity LLC in March 2026, Shannon spent over a decade in production software engineering, working across financial systems, healthcare data, and consumer applications. That experience shapes ThisCalc's editorial philosophy: every calculator on this site is one Shannon would trust to make a real decision with - whether estimating a mortgage payment, checking a BMI category, or computing a retirement savings rate. Calculations that touch your money, health, or major life decisions deserve more than a number on a screen - they need context, citations, and honest limitations.

Shannon is based in the United States and operates AYIT Creativity LLC as a registered Florida business. He responds to email, reads every correction submission, and ships fixes within 24 hours when something is genuinely wrong. The full review cycle is documented at Methodology and the editorial standards are at Editorial Standards.

Background

• Software engineering: Professional experience building production software, with expertise in JavaScript, web standards, and browser-based computation
• Financial analysis: Practical experience with mortgage modeling, investment projections, tax estimation, and retirement planning
• AI and automation: Specializes in using generative AI, research tools, and automation to build useful systems and improve workflows
• Content and education: Committed to clear, accessible explanations of technical concepts - not just raw numbers

Approach

The best calculator sites combine three things:

1. Correct math: Every formula is sourced from authoritative references and tested against known results. See the Methodology page for details.
2. Clear explanations: A calculator that gives you a number without context is not helpful. ThisCalc explains what results mean, what assumptions are built in, and when to consult a professional.
3. Honest limitations: No online tool can replace a financial advisor, doctor, or engineer. ThisCalc is upfront about that.

Contact

Questions about the site or its author? Reach out at contact@thiscalc.com.

Last updated: April 2026