Life & fun · alternatives · 2026
24 alternatives to Kalk, A calculator with math syntax, complex numbers
Kalker is a calculator that supports user-defined variables, functions, ambiguous syntax, differentiation and integration. It runs on Windows, macOS, Linux, Android, and in web browsers (with WebAssembly).
Kalk is a calculator designed for users who need to work with mathematical expressions and complex numbers. It accepts input in standard math syntax rather than requiring a specific calculator format, making it… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Kalk, A calculator with math syntax, complex numbers launched in 2021; newer entries below may have overtaken it.
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kalker▲70A calculator that supports math syntax, complex numbers, etc
2021 · kalker.xyz · its alternatives →
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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:…
2022 · figr.app · its alternatives →
- 4IM
I've been studying interval arithmetic for the past few weeks and it's a really interesting field because while there is a ton of super interesting research published over the past decades, it has never really gotten the recognition that it deserves, IMO. One reason for this is that standard interval arithmetic has really poor handling of division by intervals containing zero. If you compute 1 / [-1, 2] in regular interval arithmetic, you get either [-∞, +∞], or you have to say that the operation is undefined. Both solutions are virtually useless. The real answer of course is [-∞, -1] U…
Apr 2026 · victorpoughon.github.io · its alternatives →
- 5CA
2021 · mkhan45.github.io · its alternatives →
- 6AD
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…
2022 · its alternatives →
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A simple command-line calculator written in Go. Contribute to alfredxing/calc development by creating an account on GitHub.
2015 · github.com · its alternatives →
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Caligator▲134An open-source calculator & convertor that thinks like you
2019 · caligator.vercel.app · its alternatives →
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Simple Qt-based programming calculator. Contribute to fellerts/procal development by creating an account on GitHub.
2023 · github.com · its alternatives →
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A free-form calculator for Chrome
2022 · chromewebstore.google.com · its alternatives →
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A base-20 Integer Math calculator using Kaktovik numerals.
2023 · kaktovik-calculator.com · its alternatives →
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Numbrrrs▲90The ios-style calculator that knows you(a tad too well)
2025 · numbrrrs.app · its alternatives →
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CalPal▲105I built this using React/Next.js. The parsing logic uses [library/custom regex]. Added Gemini API support so users can generate budget templates dynamically. No ads, just a tool.
Jan 2026 · trycalpal.app · its alternatives →
- 17
Kalkules▲2Free scientific calculator with unique functionalities
2019 · kalkules.com · its alternatives →
- 18KC
2015 · kushagragour.in · its alternatives →
- 19
The core question: how did HP's scientific calculators actually work at the gate level? That rabbit hole led to building one from scratch. The architectural decision everything else follows from: a decimal calculator should store numbers as BCD — one decimal digit per 4-bit nibble. A standard byte-oriented CPU (Z80, 6502) fights that layout constantly. So I designed a small custom CPU in Verilog where 4 bits is the natural data width and memory is nibble addressable. What the project covers: - Custom CPU: Harvard architecture, 12-bit ISA, 8-state execution FSM, hardware stack guard with a…
May 2026 · github.com · its alternatives →
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The modern calculator for macOS/iOS
2020 · euclid.pr1mer.tech · its alternatives →
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723 darmowych kalkulatorów w 20 kategoriach: budowlane, matematyka, fizyka, finanse, zdrowie i płace. Każdy wzór na własnej stronie. | CalcBoxer
Jul 2026 · calcboxer.com · its alternatives →
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Wrote this to learn more about the `chumsky` parser combinator library, rustyline, and the `ariadne` error reporting crate. Such a nice DX combo for writing new languages. Still a work in progress, but I thought I'd share :)
2025 · github.com · its alternatives →
- 23AB
2020 · saasformulas.com · its alternatives →
- 24
Functionality meets simplicity, calculate with ease
2022 · apps.apple.com · its alternatives →
Also compare
- kalker alternatives
- Numbr alternatives
- Figr.app – a multi-user, notepad style calculator (desktop app) alternatives
- I made a calculator that works over disjoint sets of intervals alternatives
- CalcuLaTeX, a pretty-printing calculator language alternatives
- All desktop software calculators are wrong, so I had to build my own alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →