cofounderStart free

An AI cofounder for SaaS founders.

Product-led funnels live or die on the middle: people sign up and then go quiet. Your cofounder works that gap — activation emails, comparison pages, the demo nobody wrote — and reports in metrics you already track.

Join the founding cohort

What changes

What it does differently for SaaS

Owns the free-to-paid seam

It reads where trials stall, writes the sequence that unsticks them, and keeps the version that converts.

Builds the comparison surface

The pages people search before they buy: vs pages, integration pages, use-case pages. Written once, refreshed when competitors move.

Feeds the changelog machine

Every ship becomes a post, an email and a social thread, without you writing three versions of the same paragraph.

Cadence

A sample week

MonPulls last week's trial cohort, finds the drop-off step
TueWrites and queues two activation emails against it
WedDrafts a comparison page for a competitor that just raised
ThuShips the page, opens a thread on the same argument
FriLearnings: which of the two emails moved activation

FAQ

Questions from SaaS founders

Does it work with product-led growth?

That's the case it's built for. It reads your product analytics as the outcome signal, so it optimises for activation rather than clicks.

Can it write technical content?

It drafts, you review. For anything architectural it will ask you three questions first rather than guess and publish something wrong.

Will it touch our docs?

Only if you let it. Docs are usually the one surface founders want to keep, and it will respect that boundary.

Also

Other kinds of company

ecommerce brandsagenciessolo foundersB2B startupslocal businesses

Or start with what an AI cofounder actually is.

Nothing to lose

Founding cohort seats include the first month and a written teardown of your current funnel.

Claim a seat

100 seats. No card. We tell you on day 14 whether it worked.