Prediction-based experimentationfor shops doing €100k+ a month

More revenue from the traffic
you're already paying for

We're the only A/B testing agency that knows if a test will win before it goes live, which is why we can guarantee you at least 10% more revenue in under six months, or we keep working for free until we get you there.

See if your shop is a fit How it works

A free 30-minute call with the team. That's it.

€500M+ in additional revenue for 250+ brands like:

We built one of the largest A/B test databases in e-commerce: 4.3 million tests from 151,000 shops, since 2011.

On top of it we built our own testing tool, Apex.

Apex tells you which test wins before you build it, and runs your whole testing program in one place.

Meet prediction-based experimentation

That database and engine are ours alone, no testing process in ecom comes even close. Here's how it works:

We dig through your reviews, support tickets, heatmaps, session recordings and even your competitors' reviews. Our behavioural psychologists turn all of that into an understanding of what makes your visitors buy, and what makes them not buy. Every single test idea starts from that understanding, never from a guess.

Before we fully build out your test ideas, Apex scores every one on its likelihood to win, based on the 4.3 million tests in our database, the 4,000 we ran ourselves, and what the research says about your shop and your visitors. Weak ideas die on the list, not on your traffic.

Our team designs the variants, builds them at code level and QAs everything on real devices. We ramp fast, until six to ten tests are always running in parallel without messing with each other's results, and by month three your shop has run more experiments than most brands ship in a year.

Winners ship and keep earning, losers feed the model. Every outcome, win or lose, goes into the database filed by what it revealed about your visitors, so with every test Apex knows your shop a little better and the odds on your next ideas come out sharper than the last.

That's what knowing before you build looks like: last quarter, 55% of our tests won. The industry wins about 1 in 5, testing random ideas one at a time, on testing tools that remember nothing.

See the full process Explore Apex, the tool it runs on

Results you can find on the P&L

15ROI

€3.2M+Additional revenue

+€800kAdditional revenue

17,7ROI

€8.2M+Additional revenue

"They supported us every step of the way, from underdogs to market leaders. Their expertise helped us stay profitable, giving us the foundation to scale and dominate our market."

Johannes Kliesch

Founder, SNOCKS

10Brands supported

OngoingSince 2023

"As a cooperative with multiple formats, we rely on data-driven decisions with real impact. DRIP now supports ten of our formats and has helped boost both ARPU and conversion rates. Their regular collaboration delivers valuable insights and a strong A/B test win rate."

Timo Dunke

Digital Marketing Manager Personalisierung

50%+ win rate2x the industry average

4,000+A/B tests run

8+ yearsof A/B testing for online shops

Explore all our case studies

Where all of this lives

DRIP, the method, Apex. Here's how the three fit together.

The agency

DRIP

The company behind the method and the tool: a team of 70+ people, strategists, behavioural psychologists, data analysts, designers, developers and a QA team. However you work with us, these are the people behind it.

See our case studies

The method

Prediction-based experimentation

The rest of the industry tests guesses. We test ideas with odds on them, drawn from research into your visitors and 4.3 million past tests, and each result sharpens the next. Nobody else can run this.

The full method

The tool

Apex

Where the method runs. The prediction engine, the backlog with odds on every idea, and the dashboards you watch it all on. Everything the method learns about your shop is stored here, and never forgotten.

Explore Apex

One agency. One exclusive tool.
Two ways to use us.

What you choose is how much of the work we do for you.

Done for youWe do the work

We do it all, you watch it earn.

Everything you just read, done for you. Our experts pick the ideas most likely to win, build them, QA them and read the results. You don't touch a test. Most of our clients choose this, because the guarantee stands when our people run the machine.

See if your shop is a fit

Full Apex access
Calls with our team	Every two weeks
Research and insights on your visitors
Test ideas from our team
Likelihood to Win on every idea
Building test variants
QA on real devices
Launching tests on your shop
Performance reporting

Done with youYour team does the work

You drive. We navigate.

You get Apex, a ranked list of test ideas and our design of each idea you pick. Every two weeks we read the results together on an ideas call and pick what runs next. Your hands on the wheel, but never blind: before you build, every idea carries its Likelihood to Win, which ranks it against your own backlog by the evidence. It is not a win probability in the strict sense.

See if your shop is a fit

Full Apex access
Calls with our team	Every two weeks
Research and insights on your visitors
Test ideas from our team
Likelihood to Win on every idea
Building test variants
QA on real devices
Launching tests on your shop
Performance reporting	Together on the call

Apex only exists inside DRIP.

You can't buy access to it anywhere else.

Explore Apex

Spend the same on ads.
Make more from them.

Book a call with the team and tell us about your shop. We'll talk through where it stands, where you want it to go, and how we'd get you there. If working with us isn't the best return on your money, we'd tell you rather than take it.

See if your shop is a fit

30 minutes, and you'll know exactly where your shop stands.

The guarantee, in full

+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. That's when a guarantee stops being marketing and becomes underwriting.

The team of experts
behind your growth

The team running every experiment, and publishing the research behind it. 70+ A-players in design, development, QA, and strategy.

Fabian Gmeindl

Co-Founder

Fabian leads DRIP's experimentation data infrastructure and statistical product layer. He has helped build the analytics, reporting, and decision systems behind €500M+ in additional revenue across 250+ brands.

Samuel Hess

Board member

Samuel sits on DRIP's board. His subject is behavioral science in e-commerce: how buyer psychology turns into hypotheses you can actually test. He co-authored the Marketing Letters field study.