ethnio

Participant recruiting for research that rules.

What it does

UX research recruiting, scheduling, incentives, participant database management, intercepts and more.

TL
The load-bearing vocabulary of Claude▲703
Life & fun · 10d ago · louisabraham.github.io
iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo▲329
Photosynthesis fires two of your iPhone
Life & fun · 28d ago · photosynthesis.camera
SoloUno▲310
Take control of hair pulling, nail biting & skin picking
Life & fun · 28d ago · solouno.io
Scroll through all 43252003274489856000 Rubik's Cube states▲295
Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is
Expeditione▲265
The Interactive 3D Encyclopedia
Life & fun · 21d ago · expeditione.fun
Eigendrum - Draw any shape and hear what it sounds like as a drum▲243
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

Really Good Emails▲549
A large collection of good product email design.
Growth · 2014
MI
My Isometric Voxel Engine 6 Months Later▲435
Life & fun · 2014 · voxelquest.com
AS
A sequence of online courses to learn web development from scratch▲368
Life & fun · 2014 · mysliderule.com
IV
I've been making one HTML5 game per week. Here's my 10th game▲362
Life & fun · 2014 · lessmilk.com
RT
Real-time server monitoring in your browser▲346
Life & fun · 2014 · scoutapp.github.io
RescueTime▲318
Analytics on your daily habits and productivity
Work · 2014