Solen — AI Personal Trainer
An AI strength coach that adapts when life changes
What it does
Getting a workout plan is easy. Keeping it useful when recovery, progress, pain, or life changes is the hard part. Solen connects what you planned with what you actually did, so performance, effort, readiness, and check-ins shape what comes next. Train with step-by-step guidance or log freely, follow illustrated movement poses, and swap exercises when needed. As your training unfolds, Solen helps your plan evolve with you.
Build a personalized strength and physique training plan, log workouts, and get AI coaching that adapts to your progress, recovery, and real schedule.
Solen builds a focused training block around your life, coaches the work in front of you, and adjusts from what actually happened—not what was supposed to. Solen turns the signals around your training into a clear next decision. Your goal, schedule, equipment, experience, and constraints become one credible 4–12 week training block. Previous sets, rest timing, effort, pain, substitutions, and readiness stay close while you train. Session outcomes and weekly check-ins inform practical progression and recovery recommendations. Solen offers an interpretation and a decision. You keep control of the work. Tell Solen what you’re training for, what you have, and what your real week looks like.…from solenfitness.com
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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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Launched alongside, August 2026
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Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


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AI · 17d ago · simedw.com