Life & fun · February 23, 2026

YAP
YAP teaches you to speak a language, not tap it.
What it does
Language apps have a dirty secret: they teach you to tap, not talk. After 300+ days on Duolingo, most users still can't hold a conversation. YAP is built around speaking from day one. You talk, our AI listens, and gives real-time feedback on your pronunciation. Every lesson you complete is verified onchain as a Proof of Language Learning credential. Just actual speaking practice. Give us an early test as we continue to improve our product! Love, YAP
Does the same job
all alternatives →More life & fun this month
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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:…
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