All desktop software calculators are wrong, so I had to build my own
A new calculator software cannot really bring attention (https://chachatelier.fr/chalk/) However, I wrote a full article explaining why I had to build something "new" that does not behave like usual desktop calculator softwares : TL;DR All "small" calculator softwares I know share the same design flaws. And the GUI is not the only stumbling block in their poor efficiency. Handling correctly numerical approximations - expected or not - is crucial to trust the results. It is usually not done in lightweight tools. It should. So I prove that if I could do it, OS manufacturers…
In plain words
Chalk is a desktop calculator application designed to address common flaws found in existing calculator software. It focuses on proper handling of numerical approximations and precision to ensure trustworthy results, moving beyond typical lightweight calculator interfaces. The tool is built for users who need accurate calculations and want a calculator that behaves differently from standard operating system calculators.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
A new calculator software cannot really bring attention (https://chachatelier.fr/chalk/) However, I wrote a full article explaining why I had to build something "new" that does not behave like usual desktop calculator softwares : <https://chachatelier.fr/chalk/article/chalk.html> TL;DR All "small" calculator softwares I know share the same design flaws. And the GUI is not the only stumbling block in their poor efficiency. Handling correctly numerical approximations - expected or not - is crucial to trust the results. It is usually not done in lightweight tools. It should. So I prove that if I could do it, OS manufacturers could as well.
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