Now accepting new clients
A/B Testing Subscriptions
with Uplift Guarantee
Pause or cancel anytime.
Pause or cancel anytime.
How it works
CRO Lab replaces unreliable freelancers and expensive agencies for one flat monthly fee, with powerful A/B Tests delivered so fast and reliably you won't want to go anywhere else.
Comprehensive reports with winning variations, implementation screenshots, and actionable insights for maximum ROI.
CRO quality so high, it'll blow your mind. Our experts have optimized for Fortune 500 companies.
Each test is made from scratch and tailored to your brand — no templates or cookie-cutter solutions.
We strategically roll out your tests during the first 30 days, then let them run until statistical significance is reached.
No surprises here. Pay the same fixed price each month for predictable budgeting.
Skip the guesswork with proven test patterns from our extensive testing experience across industries.
Test library
We don't guess. Every test recommendation comes from our library of high-probability winners, refined through years of testing across industries.
Trust signals, form simplification, and urgency elements that consistently improve conversion rates.
Value propositions, emotional triggers, and clarity improvements that capture attention and drive action.
Testimonials, reviews, and credibility indicators positioned for maximum psychological impact.
Guarantee
We're so confident because we use proven patterns from years of testing experience. If you run 20 tests with us, at least a few will generate measurable uplift.
100% Guaranteed Results
Pricing
Pick a plan that works for you. Upgrade or downgrade at any time.
We only work with a select number of clients to ensure quality and attention. Currently accepting new clients on a first-come, first-served basis.
You need 5,000+ monthly visitors for meaningful test results. Higher traffic = faster results and more reliable data.
Developer add-on
Custom integrations, server-side tests, or complex functionality beyond VWO editor capabilities.
Testimonials
Real results from real businesses.
"Valentin transformed the A/B testing approach across both our companies — Truely and International Drivers Association. Before his help, we relied on developer-implemented tests which severely limited our testing velocity. Valentin showed our teams how to effectively use the Convert.com editor and implemented a streamlined ideation process. The results were immediate — we went from running a handful of tests to a robust testing calendar at both businesses. His hands-on training meant everyone could create and implement tests independently, significantly improving conversion rates. I highly recommend Valentin to any company looking to accelerate growth through data-driven decisions."
"Working with Valentin has been an absolute game-changer. His massive experience in CRO shines through in every step of the process. Communication with him is always swift, professional, and to the point. Valentin's ability to work independently and proactively is outstanding — he quickly identified the key KPIs we needed to focus on and provided invaluable support in optimizing them. The results speak for themselves: an above-average success rate in split tests and tangible improvements across the board. If you're looking for a CRO expert who delivers results with professionalism and expertise, Valentin is the one. Absolute recommendation."
"Valentin kick started our A/B testing and helped us set up impactful tests and increase revenue."
"I had the pleasure of working with Valentin Yeo as a freelance UX consultant at trivago. Valentin's keen insights and user-centered approach were pivotal in enhancing our product's user experience. His ability to bridge the gap between design and functionality is truly commendable. Valentin's professionalism, innovation, and collaborative nature make him an asset to any team. Highly recommended."
FAQs
About CRO Lab and how it works.
Get a guided tour through CRO Lab, and find out how you and your team can change the way you optimize conversions, forever.