Mathalon

Community Based Problem Solving Website. Users from 18+ Countries are now registered. Would love to hear feedback on this.

Does the same job

MO
Mathcha – Online Mathematics Editor2017 · mathcha.io · ▲358
AI Math2024 · ▲214
A free AI math problem solving website
FA
Figr.app – a multi-user, notepad style calculator (desktop app)2022 · figr.app · ▲275
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:…
MA
MathLingua – A Structured Language of Mathematics2021 · mathlingua.org · ▲97
FM
Free Math, an offline React app for managing digital math homework2017 · freemathapp.org · ▲138
IM
I'm building a tool to practice numbers in Arabic2023 · arabic-numbers.koljapluemer.com · ▲50
Recently moved to Egypt, and in dire need to get the numbers down. Great excuse to explore learning software some more. Possibly very niche, but maybe it is useful for someone else out there. Feedback is always welcome.

TL
The load-bearing vocabulary of Claude▲703
Life & fun · 9d ago · louisabraham.github.io
iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo▲329
Photosynthesis fires two of your iPhone
Life & fun · 28d ago · photosynthesis.camera
SoloUno▲310
Take control of hair pulling, nail biting & skin picking
Life & fun · 28d ago · solouno.io
Scroll through all 43252003274489856000 Rubik's Cube states▲295
Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is
Expeditione▲265
The Interactive 3D Encyclopedia
Life & fun · 21d ago · expeditione.fun
Eigendrum - Draw any shape and hear what it sounds like as a drum▲243
Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 26d ago · baselashraf81.github.io

GS
Google search blacklist▲119
Yesterday the top upvoted comment for "Why We Desperately Need a New (and Better) Google" http://news.ycombinator.com/item?id=2057772 was adding personal domain blacklists. I offered to build this if there was enough interest so here's a minimum viable product for Chrome (Firefox soon to follow): https://chrome.google.com/extensions/detail/jiicbcimbjppjbckmoknagndlhjbeohb. Your feedback is welcome!
Life & fun · 2011
PM
Pocket - my first app ever▲99
Life & fun · 2011 · letspocket.com
FQ
Fqwiki - Qwiki cloned with a single HTML file▲96
Life & fun · 2011 · banksytheluckystiff.github.com
CO
cubeduel (our side project)▲95
Work · 2011 · cubeduel.com
AW
A Wiki written in 80 lines of JavaScript▲79
Life & fun · 2011 · wiki.pageforest.com
HN
Hacker News Map 2011▲77
Life & fun · 2011 · jmarbach.com