Shopify CRO — diagnosis over gut feeling

10% more revenue per visitor. Or you don't pay

CrossBox is a scientific conversion studio for Shopify. Diagnosis, mathematics and clean craftsmanship — grounded in the MECLABS formula. No magic. No opinions. Just measured revenue.

See the results
250M visitors tested
€250K monthly revenue — scaled from €5K
90+ Google speed score, guaranteed
05 projects max — founder-led
The Principle (01)

Most agencies sell opinions. CrossBox sells evidence — every change diagnosed, built clean, and tested on your real traffic until growth compounds.

( Diagnosis before prescription.
No magic — only math. )

The Method (02)

Four levers.
One system.

01

The Revenue Audit

We find where your store leaks money — psychological barriers, technical bottlenecks, broken funnels. Diagnosed, never guessed.

MECLABS diagnosis
02

Foundation & Speed

Google Speed Score 90+ and clean code before anything else happens. A fast store is the floor, not the ceiling.

Core Web Vitals
03

Scientific Testing

A/B tests separate winners from losers — statistically clean, on your real traffic. On average 1 in 3 variants wins. That's normal.

p < 0.05
04

Revenue Stacking

Validated winners stay live for good. Every test builds on the last — compound interest for your revenue.

Compound growth
Capabilities (03)

Everything your store needs.
Nothing it doesn't.

Proof over claims (04)

Results you can
put on an invoice.

Bergzeit / RE-USE Outdoor — Re-Commerce
+300% conversion rate

From a niche experiment to a load-bearing revenue pillar: the re-commerce model scaled from four- to stable six-figure monthly revenue.

“What began as a small experiment is now a load-bearing revenue pillar. The technical execution and strategic guidance were the key to this massive growth.”
Jens Oellrich — Team Lead RE-USE, Bergzeit
MaoMao Food & Beverage
+150% average order value

From five-figure to seven-figure annual revenue — conversion up, average order value increased by over 150%.

“Our profitability has completely turned around. We don't just convert more visitors — they also spend more than twice as much as before.”
Wen Hao — Co-Founder, MaoMao
BlueFarm D2C — Full Rebuild
+20% conversion uplift

Speed is money: complete rebuild in four weeks — conversion +20% right after go-live.

“Finally a shop that runs technically clean. The relaunch was stress-free and the numbers went up immediately.”
Philip — Founder, BlueFarm
Trusted by brands that take growth seriously (∞)
In writing (05)

The CrossBox
guarantee.

  1. (01)

    +10% revenue per visitor — or you don't pay.

    The headline isn't a hook. It's the contract.

  2. (02)

    Google Mobile Speed Score 90+. Guaranteed.

    Clean code, no app bloat, no excuses.

  3. (03)

    Chefsache. Maximum five projects at a time.

    You always talk to me — never to a junior.

  4. (04)

    No fine print.

    If we miss the goal, I keep working for free until it's reached.

Stawros Koutis explaining his CRO methodology on a screen
Stawros Koutis — Founder
The Operator (06)

Chefsache.

( German — a matter for the boss. )

I'm Stawros Koutis. Every CrossBox project runs across my desk — I read the data, write the code and ship the releases myself. That's why there are never more than five clients at a time: depth beats volume, every single quarter.

“He's like a Swiss Army knife for e-commerce: extremely competent, absolutely reliable, with the right solution for every technical problem.”
Markus Foelsch — Marketing Decision-Maker & B2B Sales
Daily stack
Shopify Google Meta Reviews.io Sendcloud Rebuy
Straight answers (07)

You're probably
wondering…

Perfect. Treat this audit as an independent second opinion. Agencies often go blind to their own work. I uncover the blind spots others overlook — and if your shop is perfect, I'll tell you so honestly.

No. The principle is "diagnosis before prescription". In the call I show you concretely what's broken (friction) and what's missing (anxiety). Whether we work together afterwards is entirely your call.

Not for this first audit. I analyze the user experience exactly as your customer experiences it, hunting for the barriers that keep visitors from buying. No passwords required.

Then you don't pay — and I keep working for free until the goal is reached. No fine print, no renegotiation. The risk sits on my side of the table — which is exactly why I take a maximum of five projects at a time.

30 minutes — 2–3 actionable levers — zero risk

Open the box.

Get your free audit: I analyze your store personally — scientifically grounded, no backend access needed, and guaranteed no sales pitch.

or write directly to koutis@crossboxdigital.com

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