Andrew Williams

I measure things that are supposed to be measured and usually aren't. Currently building browser-based testers that publish their own error bars. Interested in gaming, development, instrumentation, and tools that refuse to guess.

Products

I love building tools that measure client metrics and help them understand both the actual measurement and the error around it.

InputProbe
Input device testers that publish their own measured error
$0/mo

Recent activity

How do you know whether low traction is a product problem or a distribution problem?

The number I was letting myself feel good about wasn't the right one

My "capability" field was a promise, not a measurement

Two weeks into this and I might be solving my own problem, not a user's

My "capability" field was a promise, not a measurement

Three installs made my production metrics lie

StareBrain build log: capability vs. state — the distinction I was missing

Three installs made my production metrics lie

Confirmation screens: it's not "can I undo it," it's "how far did the consequence already travel"

Launching on Product Hunt in 4 days. It's also my birthday. Here's the honest state of things going in.

Confirmation screens: it's not "can I undo it," it's "how far did the consequence already travel"

The feature worked exactly as specified—and was still wrong.

The right question for a confirmation screen isn't "how risky is this," it's "can I undo it"

2,000 upvotes on Reddit, 0 signups. I stopped launching and started commenting. 11 customers later.

15 days after launching to zero audience: $0, 1 follower, 0 stars. The full numbers.

Launching on Product Hunt in 4 days. It's also my birthday. Here's the honest state of things going in.

inputprobe is live on Product Hunt today — hardware testers that show their error bars

Launched on Product Hunt today: the part of shipping an AI-built app nobody automates — the server

Launching on Product Hunt in 4 days. It's also my birthday. Here's the honest state of things going in.

Most founders know their churn rate. Almost none know how much of it is just failed cards

Andrew Williams

InputProbe