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Dev tools · March 31, 2026

Gauss

Notepad calculator for Mac with units, currencies &dev tools

Gauss launched on March 31, 2026 with 2 votes, #5,166 of 23,380 launches that month.

What it does

Gauss is a notepad-style calculator for macOS. Type math the way you think — with words, units, and currencies — and get instant results on every line. No buttons, no equals sign, no separate conversion apps. 80+ unit conversions, 170+ live currencies, and developer tools like color conversion, base64, and timestamps. 4x cheaper than Numi ($4.99 vs ~$20). 7-day free trial, one-time license.

A free, open-source notepad-style calculator for macOS with natural language input, 80+ unit conversions, 170+ live currencies, and developer tools. Native Swift, MIT licensed.

A notepad-style calculator for macOS — the free, open-source alternative to Numi. Gauss is a notepad-style calculator for macOS. Type math the way you think — with words, units, and currencies — and get instant results on every line. No buttons, no equals sign, no separate conversion apps. Built for developers, designers, and anyone who does quick math throughout the day. Summon it with a hotkey, type your expression, and get back to work. Variables carry across lines, results auto-save, and everything runs locally on your Mac. Gauss is open source and free forever — no trial, no feature gating, no subscription. Type expressions the way you think. Write "20% of 150" or "$45 + tax" and get…from awesomemacapp.com

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    Hi all, just posting an update to my previous Show HN, where I announced a side-project I worked on which was a (web version) of a multi-user, notepad style calculator: https://news.ycombinator.com/item?id=31817997 After a couple of user requests (and having a good think about it) I decided to migrate the web UI to create a Mac and Windows desktop app. After using it a little bit, I feel this is a much better experience than the webapp, and reduces a lot of the friction if I wanted to run a few small calculations. You can find the download links below:…

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