Co-Founder Partnership
You've got the audience. There's a product hiding in it.
I build the software your audience already needs — and we own it together. You bring the reach. I build and run it. Nothing upfront. 50/50.
Built with creators like Alex Welsh (Locksmithing Secrets) — now my co-founder on KeySolved.
The Proof
I've already done this — here's how it worked.
Alex Welsh teaches locksmithing to a 28k-strong audience. His students kept asking the same thing on every job: which key, which tool, for which car? The answer was scattered across forums, PDFs and WhatsApp groups.
So we built KeySolved — the reference app that answers it in seconds. I built it and run it. Alex brings his audience and is my co-founder. We split what it makes. Your audience has a version of that question. I find it, build it, and we own it together.
1 / 8Keysolved
The vehicle key reference, built for working locksmiths
21 days
Kickoff call to live product
7+
Countries with paying subscribers
$19/mo
Standard subscription
"For years I have wanted to do this and now it’s a reality so thank you. I’m really looking forward to promoting it and you have my word that I’ll be making this my main priority."
Alex Welsh
Co-founder, Keysolved · Founder, The Locksmith Mentor
How It Works
Simple, and weighted in your favour.
You bring
an engaged audience and the commitment to market the product to them — the same way I commit to building it.
I bring
the entire product: build, infrastructure, data, support, and the day-to-day running of it.
We split
revenue 50/50 after costs. Both of us see the Stripe dashboard. No equity games, no hidden fees.
You pay
nothing upfront. Your reach is the investment.
We start trading through existing accounts, sign a simple heads of terms, and formalise properly once it's making real money — not before.
The Maths
Do the maths on your own audience.
A small slice of an engaged audience is a real monthly income. Drag your audience size and watch your half — after costs.
co-owned 50/50
700
Subscribers @ 2%
£5,985/mo
Your half
£5,985/mo
My half
Illustrative: 2% of your audience at £19/mo, after ~10% costs (hosting, payment fees, third-party services), split 50/50.
Turn your audience into a product — the 5-day playbook.
One short email a day: how the model works, the exact playbook behind KeySolved, and how to find the product hiding in your audience.
Free. One email a day for five days. Unsubscribe anytime.
Why Me
A product person, not an agency.
18 years building products — including leading product design at Habito, where the software I worked on processed £3B+ in mortgages* — and 100+ products shipped through Hello Crossman. I build production-grade software in ~30 days, not 30 weeks. You're not getting a freelancer or an offshore team; you're getting a co-founder who can actually ship.
£3B+
processed
100+
products shipped
~30 days
to production
*£3B+ processed at Habito on products I led the design of — not by Hello Crossman alone.
Is This You?
This works when:
You've got an engaged audience (a list, a channel, a community), not just a follower count.
Your audience hits the same painful task repeatedly — a lookup, a calculation, a piece of admin they all complain about.
You'll actually market it. This only works if you drive it.
If that's you, there's almost certainly a product hiding in your audience. The call is where we find it.
FAQ
The questions everyone asks.
Let's find the product in your audience.
One 15-minute call. I'll come having looked at your audience, with a view on what the product could be. No pitch deck, no obligation.
Go deeper on the model
How co-ownership works, why it beats a sponsorship, and what makes an audience product-ready.
The Product Hiding in Your Audience: How to Find the One Worth Building
There's usually a product hiding in your audience — the repeated, painful question they keep asking you. Here's how to find the one worth building, with KeySolved as the worked example.
Sponsorships vs Co-Ownership: The Real Maths of Monetising an Audience
A sponsor pays once; a co-owned product pays every month. Here's the real maths of monetising an audience — with honest conversion scenarios and a clear four-way comparison.
How We Built KeySolved: Turning a Locksmith Audience Into a Co-Owned SaaS in 21 Days
KeySolved went from a locksmith educator's idea to a live, billing SaaS in 21 days — co-owned 50/50, with paying subscribers across 7+ countries. Here's the full build story.