darwinch
Thoughtful website experiments

Remarkable apps keep evolving.

Turn a hunch into a fair test. Preview better headlines and calls to action, approve the change, and learn what moves people.

Open your workspace
You approve the change. Your original stays safe.
An animated example of the homepage headline improving over five versions, from “Good apps need testing.” to “Remarkable apps keep evolving.” Each version changes a word or two, and the click rate rises after each one, by more each time: 4.0%, 4.2%, 4.6%, 5.3%, 6.3%. The final version earns 57% more clicks than the first.
Homepage headlineClick rate by version
From a hunch to a useful decision
01Propose a change
Start with a hypothesis. Ask AI for a couple of ideas, or write your own.
02Make it a fair test
Keep a control, a fixed split, and one clear goal. Every visitor keeps their version.
03Listen to the evidence
See uncertainty alongside conversion rates. An inconclusive result is a useful result.
An experimentation partner in the making

Better tests, with less guesswork.

Darwinch is being built as an AI experimentation partner that works alongside agents in your environment, helps choose useful tests, and learns from the evidence over time.

The current pilot supports AI-assisted headline and call-to-action text ideas. You preview the exact change, approve it, and choose when to start the experiment.

Agent integration, supervised iteration, and an autopilot mode are planned. They are not available in the current pilot.