€2.56Min 6 months
+10% · Session CVR
Performance-based CRO agency
A performance-based CRO agency
that puts the outcome in writing
At least 10% more revenue in under six months, or month seven onward is free. We can promise it because we know our numbers: more than 50% of our A/B tests win. An agency that can't predict can't promise.
For online shops from €100k a month. A free 30-minute call with the team.
€500M+ in additional revenue for 250+ brands like:
Sound familiar?
Every agency promises results. Few put anything on the line.
You've paid agencies for audits, slides and a test or two a month. The reports looked busy. Whether any of it made money, nobody could say for sure.
The "performance-based" offers weren't much better. A cut of revenue the agency never touched, or a fee per "winner" that rewards calling noisy tests early. Either way the agency got paid, and you carried the risk.
- You pay for activity: audits, decks and ideas, whether anything moves or not.
- Uplift is whatever the agency says it is, because nobody wrote it down upfront.
- Winners get called early, and some of them were never real.
- Seasonality and your ad budget get counted as the agency's work.
- Results come as conversion rate, never as revenue you can find in your books.
Why we can guarantee the outcome
A guarantee only holds if the method behind it does. Ours is Prediction-Based Experimentation: four steps, repeated every month, with month six as the checkpoint.
The first month is research: reviews, surveys, support tickets, competitor reviews, ten analyses and 40+ hours of session recordings and heatmaps. We find where your shop leaks revenue, and why. Every idea gets written as if, then, because, and you get the 20+ page report.
Apex by DRIP, our own testing tool, gives each idea a Likelihood to Win, based on one of the largest A/B test databases in e-commerce: 4.3 million tests from 151,000 shops. That's what makes a guarantee possible. We don't spend your six months on ideas that were never likely to win.
One test a month won't move revenue in six months. We build every variant in code, QA it on real devices and run six to ten tests in parallel. The statistics are fixed before launch, 80% confidence, 80% power and no early stopping, so a win is a real win.
Winners ship and keep earning, and every result, win or lose, sharpens the odds on the next ideas. Month six is when the guarantee comes due and the lift gets measured. If we miss, month seven onward is free.
That's the short version. The full method, phase by phase, is on the process page.
See the full processWhat happens when the method works
One shop inside its first six months, one that kept compounding for three years.
€12.2Mover 3 years
25.3× · Program ROI
How Giesswein added €12.2M in revenue after a post-COVID drop
€500M+additional revenue for our clients
4,000+A/B tests run by our own team
27% to 55%our win rate, 2024 to last quarter
What you get
The guarantee comes with the whole program, run by our team.
The guarantee, written down
What counts as uplift, how it's measured and what happens if we miss, in plain language before we start.
A research report on your buyers
20+ pages on why your visitors buy, why they don't and where your shop leaks revenue.
A ranked backlog
Every idea scored on revenue exposure, Likelihood to Win and effort, and re-ranked every two weeks.
Six to ten tests at once
Code-level builds, QA on real devices and statistics fixed before launch.
Reporting in revenue
Every test measured in revenue per visitor, and an executive view of what shipped and what it earns.
A call every two weeks
With the team running your program: what won, what lost and what comes next.
Questions we get on almost every call
It means we put the outcome on the line, not just the deliverables. When you can predict what wins, you can promise the outcome. What counts as uplift, how it's measured, and what happens if we miss is written down in plain language.
Online shops from €100k a month in revenue, with our team running the program. Below that size, tests take too long to reach a result. The rest of the conditions are written down in plain language, and we go through them with you on the call.
Month six is when the guarantee comes due and the lift gets measured. What counts as uplift and how it's measured is written down in plain language before we start, so there's nothing to argue about later. Every test behind the number runs on statistics fixed before launch, with no early stopping, so the wins that count are real.
Then month seven onward is free. That's the whole promise: at least 10% more revenue in under six months, or month seven onward is free. The exact terms are in writing before the program starts.
Because we know our numbers. More than 50% of our A/B tests win, while the industry wins about 1 in 5. Our win rate went from 27% in 2024 to 55% last quarter. An agency that can't predict can't promise.
The guarantee applies when our team runs the program for you, which is what most clients choose. In consulting, your team builds and launches the tests with Apex and a call with us every two weeks. We'll talk through which way fits your shop on the call.
In month one the research is done, the plan is scored and the first tests are live. By month three you've usually run more experiments than most brands ship in a year. Month six is when the guarantee comes due.
Find out if the guarantee
fits your shop
Book a call with the team. We'll look at your shop, your traffic and where revenue leaks, and tell you straight whether the guarantee fits. If it doesn't, you'll hear that too.
See if your shop is a fit
30 minutes, and you'll know exactly where your shop stands.
The guarantee, in full
At least 10% more revenue in under six months, or month seven onward is free.
When you can predict what wins, you can promise the outcome. What counts as uplift, how it's measured, and what happens if we miss is written down in plain language.
We can promise it because we know our numbers: more than 50% of our A/B tests win, across 4,000+ documented experiments. The guarantee stands when our team runs the program for you.