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LogicCommons
Calculators you can trust, for humans and AI
A commons of professional calculators: 145 today across engineering, finance, statistics, and everyday decisions, growing weekly. Every one is a spreadsheet model computed live, with methodology and references on the page, so the number comes from verified logic rather than hand-written code or an AI's arithmetic. AI agents call the same calculators over MCP. Open beta; spreadsheet downloads and community contributions open when we leave beta. Free, ad-free, no account.
Hi Product Hunt, I'm Ugur, founder of Pagos.
LogicCommons is a commons of professional calculators, 145 today across engineering, finance, and everyday decisions, with more added every week. Every one is a spreadsheet model computed live, and the methodology and references are on the page.
The starting observation: AI is remarkable with language and still uneven with numbers. So instead of asking a model to do arithmetic, we give it verified logic to call. AI agents can use every calculator over MCP, so when an assistant answers a numbers question, the number can come from a verified model.
Why spreadsheets: the logic already lives there. Business professionals, engineers, and finance teams have spent decades encoding validated methods in Excel, with the edge cases and exception handling a rewrite quietly loses. And because it lives in Excel formulas rather than code, any practitioner in the field can open it and check the math.
If you want to see the depth, try the rent vs buy calculator: https://www.logiccommons.com/cal.... Rather than one answer, it runs the full calculation across 121 combinations of your two most uncertain assumptions and shows exactly where buying wins and where it doesn't, recalculating as you change an input.
We're in open beta. Spreadsheet downloads and community contributions open when we leave beta. Free, ad-free, no account.
Take a look and tell me what you think.
About LogicCommons on Product Hunt
“Calculators you can trust, for humans and AI”
LogicCommons was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #64 on the daily leaderboard. A commons of professional calculators: 145 today across engineering, finance, statistics, and everyday decisions, growing weekly. Every one is a spreadsheet model computed live, with methodology and references on the page, so the number comes from verified logic rather than hand-written code or an AI's arithmetic. AI agents call the same calculators over MCP. Open beta; spreadsheet downloads and community contributions open when we leave beta. Free, ad-free, no account.
On the analytics side, LogicCommons competes within Productivity, Spreadsheets and Artificial Intelligence — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how LogicCommons performed against the three products that launched closest to it on the same day.
Who hunted LogicCommons?
LogicCommons was hunted by Ugur Kadakal. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of LogicCommons including community comment highlights and product details, visit the product overview.
Ugur Kadakal