Safety Check-In: Hayo
Every day becomes a safe day!
What it does
Hayo lets your Circle know you're safe, without you having to think about it. Create a Circle with up to 10 trusted contacts, set a check-in schedule, and confirm you're okay with a single swipe. Miss a check-in, and your Circle is notified automatically. No calls, no explanations, no extra steps. Whether you're commuting home late, travelling solo, or just want a quiet safety net in your daily routine, Hayo stays out of the way until it matters.
Your loved ones want to know you're safe. Hayo makes that effortless.
Does the same job
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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:…
Life & fun · 26d ago · baselashraf81.github.io
Launched alongside, August 2026
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Life & fun · 10d ago · louisabraham.github.io
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Life & fun · Aug 2026 · toneyalexander.github.io
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com