Your AI is technically brilliant and a little bit useless 🙃
I'll bet you $27 this Claude skill makes your AI convert better in 10 minutes.
The same AI you already use, finally writing stuff that actually brings you customers.
50,000+ customers helped across 100+ countries
Everyone's “winning with AI.” Are you?
How many customers did AI actually get you this year? Not an open. Not a like. A real person who paid you.
For most people, the answer is “not many.” Or honestly, “I've stopped keeping track.”
And yet you keep seeing other people grow their businesses with the exact same tools. Same ChatGPT. Same Claude. It's clearly working for them.
So what do they know that you don't? 🤔
It's not you. And it's not your prompts.
You've probably been told the answer is better prompts. It isn't.
You could hand the AI everything about your business right now. Your offer, your story, your tone, all of it. It'll still write something that sounds great and sells nothing. That's not a you problem. It's just how AI works when it's missing the one thing that actually matters.
Everyone keeps saying “get better at prompting.” Perhaps you tried. You've got nice-sounding words and no new clients to show for it.
Better prompts, worse prompts, doesn't matter. Business isn't growing fast enough 🤷♂️
The way I see it... if you actually want more customers, you've been asking the wrong question all along.
The real question
What actually makes a stranger buy? (and can AI do that for you? 🤔)
Nobody grows a business by getting better at AI. They grow it by getting more clients. So that's where we start: what actually makes someone buy from you? Answer that first, then point your AI at it.
Short answer: it can.
Here's how I know.
I got a little obsessed with this question. 😅
I'm Wilco. 22 years selling online, started at 16. I've spent over $10 million of my own money on Facebook ads, and built and sold three companies.
For years one question nagged me. Not “can AI write” (obviously it can), but can it actually get strangers to buy?
So I ran thousands of experiments. Most flopped. A few cracked it. And I found the one thing that turns AI from making words into getting customers.
The answer is yes. And it's simpler than you'd think.
AI can do almost everything that sells. Almost. 😏
Ask AI to write you a converting email, ad or post, and it'll reach for all the classic moves good copy is supposed to have:
Notice what they all have in common. They're you, talking about you. A stranger has heard it all day. It slides right off.
The one it can't do (the dashed one) is the only one a stranger actually trusts: real proof from other customers. Your AI has no idea what anyone has ever said about you.
(At least, it couldn't. Until now.)
So I built ProofKit. Two skills, ten minutes.
You drop them into the Claude account you already have. No new tool to learn, no terminal, nothing technical.
Scattered proof
One command
SpeedResultsTrustStructured file
“...and one customer saved 20 hours a week with it.”
Writes with proof
Quick example...
Here's what this did to my own ad results. 🤯
Two of my real ads. Same product, same audience, same AI. The only difference: one had a real customer in it. The other was me talking about me.
Wilco de Kreij
Sponsored · 🌐
You've tried the courses, the threads, the prompts. You're not behind. You're about five steps from marketing that runs itself.
growonrepeat.com
You're 5 steps away
No customer in the ad
Me talking about me
$165
per customer
Wilco de Kreij
Sponsored · 🌐
Steve runs VizDJ in the UK. He went on holiday with a week of content already queued, then watched it perform from the beach.
growonrepeat.com
Watched it perform from the beach
A real GrowOS customer
A real customer in the ad
$16.22
per customer
Same everything. One had a real customer. Roughly ten times cheaper per sale.
Note: I'm not promising you'll get 10x cheaper customers. That'd be guru talk, and I'm not a guru. But no sane person argues that real proof lowers conversions. Even if it's “just” a 50% bump, that's a no-brainer. Unless you genuinely hate money, in which case, carry on. 🙂
Everything I figured out, ready to use, for $27.
The core
The two ProofKit skills.
They install in 90 seconds and build your proof file in about 10 minutes. Simple to use on their own. And if you ever want a little hand-holding, there's a short video walkthrough and an easy PDF guide too. Works in Claude, Claude Cowork, and Claude Code.
The skill files
Video walkthrough
PDF guide
Now, here's the part where every marketer on earth piles on bonuses until the page is longer than your arm. You're going to expect a few anyway. So, fine. Here you go, and these ones are actually useful:
Bonus
The Team Multiplier
A short video showing exactly how to give your team access, so everything they write with AI starts converting better too.
Bonus
The Proof Ads Playbook
My best-performing ad formats, the screenshot-as-email and screenshot-as-Reddit-post, so your AI can build proof ads like the $16 one.
Bonus
Proof From Scratch
For anyone who thinks they don't have enough proof yet. Finds what you didn't realize you had, plus a short playbook to collect more on purpose.
What's inside
Once. No subscription, no upsell buried in the product.
30-day money-back, and you keep the file either way.
It works, or it's free. 30 days. 🤝
Install it. Use it. Compare what your AI writes now to what it wrote before. If it isn't converting better, email support@growonrepeat.com within 30 days and I'll refund every cent.
And if you refund? Keep the file.
You did the work to build it; it's yours. That's how sure I am.
Call it my $27 bet with you. The risk is mine.
Ten minutes to set up. Then it runs itself.
Wait, what does it actually do? Here's the whole thing in plain words.
It sweeps
inbox · DMs · reviews · video
“A week's worth of content done before a last-minute holiday.”
“It has already saved me an INSANE amount of time.”
“20 hours saved in the first stretch with GrowOS.”
“I'm loving GrowOS and Claude.”
Your AI uses it
right proof, right spot
A short Claude skill keeps adding new proof as it comes in. The file gets stronger every week, and you did nothing to make it happen.
Run the first skill. Not sure how? The video walks you through it. It goes and collects all your social proof, wherever it lives, and drops it into one tidy file.
Then just write like normal. Whenever you ask Claude for an email, an ad, a post, anything, it automatically pulls the right proof into the right spot for you.
It converts better. Done. Same writing, now with real customer proof baked in. And it quietly keeps the file updated as new proof comes in, so it only gets stronger.
Whatever you make with AI, it now writes with your proof.
Same prompt you'd use anyway. Pick whatever you make most:
Before · generic AI
Gmail · New message
Hey [name], wanted to check in about [product]. A lot of business owners are finding it makes a real difference.
If you've been thinking about it, now's a good time. — Wilco
After · with ProofKit
Gmail · New message
Hey [name], wanted to check in about [product].
Silvia picked it up two weeks ago: “it has already saved me an INSANE amount of time.”
If that sounds good, here's the link. — Wilco
Try any tab. Same prompt, same AI, every one comes out the same way: your real customers, baked right in.
Why this is only $27.
I'm not going to promise you'll double your business overnight. That's guru talk, and I'm not a guru.
Here's what I'll actually stand behind. In every business I've run, real proof has beaten every clever trick I've ever tried. Most marketing advice changes every six months. People trusting other people doesn't.
I built ProofKit because almost everyone is sitting on proof they never use, and AI finally made it easy to fix. I priced it at $27 because I'd rather a lot of small businesses actually use this than a few pay a fortune for it.
That's the whole reason.
So, where do you want to be in 30 days?
Keep going as you are
More “fine” drafts, more polite silence, still watching other people's AI do what yours won't.
Set this up tonight
Ten minutes, and from tomorrow every email, ad and post pulls in your real customers. In 30 days your numbers are different. If not, you didn't pay.
Same effort either way. Different month.
$197 · $27 · everything above · 30-day “works or it's free”
Before you go
Hey, it's Wilco.
I built this because I was tired of watching people pay for AI that writes generic junk. The problem was never the AI. Nobody was giving it the right input.
One more thing, since people ask: every few months Anthropic ships a new Claude and some prompts need a tweak. Doesn't matter here. ProofKit is the input layer, your customers' real words, organized. When AI gets smarter, it just gets better at using your proof. You're not buying today's AI. You're building the thing that gets more valuable as AI improves.
No countdown timer. No “but wait, there's the real price.” If $27 to make your AI actually sell needs a ticking clock to feel like a deal, I'm doing this wrong.
See you on the inside.
Wilco
Wilco de Kreij · Grow On Repeat
Still wondering about something?
No. ProofKit only uses proof you actually have. If it doesn't have a real quote that fits, it adds nothing. Never fabricated, never invented.
No. It works in regular Claude or Claude Desktop. If you can install an extension, you can install this.
The proof file is plain text, so you can paste it into any AI. The automatic injection runs inside Claude, so if Claude's your daily driver you get the full thing.
That's what Proof From Scratch is for. A Facebook comment counts. A thank-you DM counts.
Both. Screenshots get read, videos get transcribed.
If you have customers who've said anything good, it works. Coaches, SaaS, e-commerce, agencies, course creators, services.
Everything runs on your machine, your Claude account. The file lives in your folder. Nothing's uploaded to me.
Email within 30 days, full refund, and you keep the file.