MonsiTools

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MonsiTools is a calculator and workflow builder for founders, freelancers, finance and e-commerce teams. Type a formula in plain words, such as price - product cost - shipping, and it becomes a working calculator with labelled fields and a live preview. Calculators, including 1,262 ready-made ones across finance, SaaS metrics, e-commerce, marketing and operations, can be chained into workflows where each step carries an earlier result forward, so MRR turns into runway and then a valuation without copying numbers between tabs. Teams can compare scenarios side by side, run sensitivity checks, save reusable workspace variables and export a workflow run as a PDF decision report. A JSON API and a remote MCP server let Google Sheets, Zapier and AI assistants such as Claude and ChatGPT run the calculators directly.