Show HN: All desktop calculators are wrong, so I had to build my own

This page summarizes the projects mentioned and recommended in the original post on

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  • libqalculate

    Qalculate! library and CLI

    My favourite desktop calculator so far is Qalculate![0] for similar reasons, and I basically never have the keypad shown. It uses libqalculate, which also provides a console version of the same library.

    It's incredible and I love it.


  • insect

    High precision scientific calculator with support for physical units

    I recommend (you can install it through NPM to use it locally). Does simple maths well, does functions, does units, does conversions... pretty cool shell calculator.

  • WorkOS

    The modern API for authentication & user identity. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  • ralc

    A simple cross-platform RPN calculator written with React

    I love this, great idea! I don't need the majority of the fancy features but I can see the use case for them.

    I built my own calculator app a while ago [0]. I've used an HP-41C as my main calculator for many years and I have not yet found a good RPN calculator app available on ALL platforms. I wanted a simple calculator that felt like an HP-41C that I can use on my phone + all desktop operating systems and get the same experience.

    [0] (if you're on desktop, it looks much better if you install it as a PWA and resize to your preferred size)

  • numi

    Beautiful calculator app for macOS

    I haven't seen Soulver, but it looks very similiar to the one I use on Mac, called Numi. On Android, I use an app called CalcNote which works in a similiar way. Neither does graphing, but you can do common formulas and functions like cos/sin/rad. I use numi for simple calculations, and find it fantastic when I'm trying to figure out project stuff. A recent use is entering wall dimensions to figure out square footage and compare different building materials. I often leave most of my old calculations in numi like a long-lived numerical memory.

  • duckduckgo-locales

    Translation files for <a href=""> </a>

  • in-line-calculator

    📟 an interface-less calculator for Windows

    > The only calculators I know that makes keypad optional/hideable are SpeedCrunch and Qalculate!, and now this.

    or theres "invisible" calculators like this[1] that do away with GUI altogether. microsoft's onenote has something similar built in as well


NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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