[Showoff Saturday] I originally built this math tool in C back in 1992 as a math teacher. Today, I ported it into a mobile web app with Speech Recognition (GPLv3)

Hi r/webdev ! I have a bit of a unique backstory for this Showoff Saturday. Back in 1992 , while working as a math teacher, I wrote the very first version of a mental math training program named Aritm in C. Fast forward to today, and I have completely modernized it into Aritm SR —a mobile-first web app, now featuring full English support and optional speech recognition. The Tech & Features: Why I built it: While great platforms like Khan Academy exist, they often rely purely on randomly generated questions. Based on my experience teaching math, Aritm acts more like a physical deck of flashcards that gets shuffled, creating a much better learning rhythm for memorization. I would love to get the community's feedback on the frontend structure, how the speech recognition feels, or any tips on optimizing mobile web performance!Thanks for checking it out, and I'm happy to answer any questions about its 30+ year evolution! submitted by /u/mobluse [link] [留言]