Good Measure Labs is a small, independent studio. We make and own a growing family of websites: tools, guides and games that each do one job well. We hold them for the long run and make them a little better every week.
The idea is an old one. Own good things, look after them, and give them time to compound. We apply it to websites.
Most of what we build is small on purpose. A calculator that answers one question honestly. A directory that stays current. A game that fills a five-minute break. Small things are easier to get right, cheaper to keep running, and they add up.
We would rather own many modest, useful sites than chase one loud one. Some will grow. Some will not, and we will say so.
We build to keep. A site earns its place by being useful, year after year.
Each site does one job, free and without an account wherever we can manage it.
Most of our tools run in your browser. What you type stays on your device.
We count what people actually do, and we say plainly when something isn't working.
Many ideas don't pan out. We ship small, learn quickly, and keep what earns its keep.
No growth at any cost. We spend carefully and let good work accumulate.
A selection of the sites we own and run.
| Site | What it does | Address |
|---|---|---|
| For developers and AI builders | ||
| JavaScriptAI | A curated, current directory of AI tools for JavaScript developers. | javascriptai.com |
| AI Waterfalls | Step-by-step AI prompt recipes for real work. | aiwaterfalls.com |
| Prunable | Measure and trim the tool lists AI agents load. | prunable.ai |
| PaidEndpoint | Read an x402 payment request before an agent pays it. | paidendpoint.com |
| VoiceCosts | Budget what AI voice calls will really cost. | voicecosts.com |
| AgentDrills | Short, hands-on practice in debugging AI agents. | agentdrills.com |
| Everyday decisions | ||
| HeatPumpBids | Compare heat-pump quotes side by side, privately. | heatpumpbids.com |
| Backyard Court Quotes | Check whether a pickleball court fits, and compare contractor quotes. | backyardcourtquotes.com |
| Concert Adventure | Plan a trip around the show you want to see. | concertadventure.com |
| Check Writer | Write checks with a high-contrast mode for low vision. | checkwrite.org |
| Learning and play | ||
| Science is How | Interactive stories from the history of science and math. | scienceishow.com |
| GeoCSS | Explore geometry through a little code. | geocss.com |
| disordat | Compare any two things and share the verdict. | disordat.org |
| RecallMeter | A two-minute daily memory puzzle. | recallmeter.com |
| I Need a Distraction | Tiny games for a better break. | ineedadistraction.com |
| For fans | ||
| Paul Skenes | Stats, games and trivia for Paul Skenes fans. | paulskenes.com |
| Aaron Judge | Stats, schedule and trivia for Aaron Judge fans. | aaronjudge.net |
Software agents help us look after the portfolio. They read each site's numbers, notice what people struggle with, and propose improvements. A person reviews every proposal and decides what ships. It lets a small team care for many sites without cutting corners.
Building something we should know about, or want to talk about one of our sites? Write to sean@goodmeasurelabs.ai.