---
name: "Wyrm Math"
subtitle: "An algebra app where illegal moves can't physically be dragged into place"
date: 2026-07-11
shortlist: true
link: "https://github.com/dicroce/wyrm_math"
linkText: "github.com"
source: "Hacker News — Show HN"
topics: [macos-apps, tools]
tags: [math, education, open-source]
description: "A gesture-based algebra app built on an open-source 'conditionally-sound' engine that makes invalid algebraic moves physically impossible to drag into place."
---

Wyrm Math is a gesture-based algebra app for iOS and Android (with a browser demo) built on an open-source engine the author calls "conditionally sound" — instead of letting you make a move and then flagging the error, the interface simply won't let an invalid step land. You drag terms across the equation, and if a move would break the algebra, there's nowhere to drop it. The result is a workspace where the usual trial-and-error of solving equations gets replaced by a constrained set of moves that are always legal.