🔥 May offer CRO Audit FREE in May (€395 value) · A/B Sprint from €1,495 → €795 · ends May 31, 2026
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Discipline 03 · Conversion & Optimization

More from the same
traffic.

Traffic is nice, revenue is better. We build the measurement stack, run A/B tests with statistical confidence, fix checkout flows and optimize every step from funnel to order. No "vibes-driven" optimization.

View live cases
10+ years e-com CRO Fixed-price sprints Statistical-confidence A/B testing 30-day satisfaction or refund
May offer: CRO Audit free (€395 value) · A/B Sprint €795 (was €1,495) · max 4 sprints in May
Visitors100%
↓
Product page68%
↓
Add to cart24%
↓
Order+47%
+47%Conversion lift
12hTest live
95%Stat. confidence
10+ years of conversion work at
holidu TUI IKEA Belvilla vidaXL
10+ years online marketing
10+ years SEO & discoverability
Full-stack web developer
AI expert automation & LLMs
Recognize the pain?

You can't fill a leaky bucket by pouring in more water.

Three common patterns why traffic doesn't become revenue — and why buying more ads doesn't solve the problem.

01.
"We've been A/B testing since last summer."
One test per month, no hypothesis framework, no statistical significance, no roadmap. Nobody remembers which test did what. No lift, only reporting.
02.
"Our checkout flow is from 2018."
5 steps where 2 are needed. 8 form fields where 4 are enough. No Apple Pay, no guest checkout, no address autocomplete. Every 1% friction reduction = 1% revenue.
03.
"GA4 is on, but what do I do with it?"
Dashboard full of vanity metrics. Sessions, pageviews, bounce rate — no action points. No funnel analysis, no segment behavior, no drop-off analysis. Data without decisions.
GrowthMaster · Optimization
CRO Playbook
A/B testing · funnel fixes · 90-day plan
3 pillars (test / measure / fix) 11 CRO tactics with benchmarks 90-day CRO plan for SMB
May offer · 3 of 8 intake spots still open
Free playbook · 5-page A4 guide

+57% conversion in 90 days — without Optimizely fees.

The CRO Playbook is how an architects' firm went from 1.4% → 2.2% form conversion in 90 days (+€18K extra lead value/mo). 4 of 6 tests won. Hypothesis templates · GA4 events code · PIE prioritization matrix · sample-size calculations. No Optimizely (€2K/mo), no noise tests.

  • GA4 events code (cart-add, scroll-50, generate_lead)
  • PIE prioritization matrix with real test scores
  • Real case: 4 of 6 tests won, +€18K MRR
What you get
CRO Playbook · 5-page A4€97
GA4 event-tracking code (copy-paste)€197
PIE prioritization matrix template€97
Sample-size + significance calculator€47
Test-learning log template (Notion + Sheets)€97
Total value €535FREE TODAY
We'll email you the link · no spam · by submitting you agree to our privacy policy.
🛡️ "Win-rate 35%+" guarantee: if in 90 days we don't win at least 3 of 8 tests with statistical significance — you get a free 60-min CRO strategy call (€297) as an apology.
✓ Check your inbox The guide is in your mail. No mail within 2 minutes? Check your spam folder or open the guide directly here →
Four products

No "we'll-see-what-works". Four sharp tracks with tested results.

Fixed price upfront. Fixed deadlines. And a performance guarantee that means real skin-in-the-game.

— Product 01 · Lead Magnet
CRO Audit · 60-min session
Live screen-share walking your funnel: home → category → product → cart → checkout. You get an immediate list of top-5 friction points and an estimated conversion lift per fix.
  • 60-min Loom recording with screen-share
  • Top-5 friction points with impact estimate
  • 3 hypotheses for your first A/B tests
  • 30-day action roadmap you can run yourself
In May
€ 395 FREE
— Product 02
A/B Test Sprint · 12 weeks
3-4 A/B tests live, statistically significant, with clear conclusions and winning variants implemented. No "we'll look later" — concrete lift within the quarter.
  • 3-4 A/B tests fully set up and run
  • Statistical significance via VWO/Optimizely/GA
  • Hypothesis framework (RICE/PIE prioritization)
  • Weekly updates + sync call every 2 weeks
May offer
€ 1,495 € 795
— Product 03
Funnel Rebuild · checkout fix
Full checkout flow redesigned + built. Friction gone, payment options expanded (Apple Pay, Google Pay, Klarna), guest checkout, smart validations.
  • UX rewrite of cart → confirm in max 3 steps
  • Address autocomplete + smart validation
  • All major payment methods + saved cards
  • A/B test of old vs new flow with measurement
From
€ 2,950
— Product 04
CRO Retainer · ongoing
12-36 tests per year, ongoing heatmap analysis, funnel monitoring, quarterly roadmap. For brands that want to optimize structurally instead of ad-hoc.
  • Min. 12-36 A/B tests per year (planned)
  • Hotjar/Microsoft Clarity heatmap monitoring
  • Weekly stand-up + monthly review
  • GA4 dashboard updated monthly
Per month
€ 1,950
How we work

Hypothesis. Test. Lift. Scale.

No vibes, no "I think this will work". Everything on data, everything on significance, everything on revenue impact.

— Step 01
Audit & baseline
Analyze GA4 + heatmap data. Where are you losing the most traffic? Which pages have the highest exit rate? Ends in a prioritized friction list.
— Step 02
Hypothesis & prioritization
Per friction point: hypothesis ("IF we change X, THEN Y rises by Z% BECAUSE..."). Prioritized with the RICE framework. Top-3 goes into the test pipeline.
— Step 03
Build & run tests
Test variants built in VWO/Optimizely/GA-Optimize. Traffic-split, sample-size calculated, runs until statistical significance (95% confidence).
— Step 04
Win & scale
Winning variants permanently live, losing variants archived + lessons documented. Next test batch starts. Continuous optimization.
Live cases

Two companies pulling more revenue out of the same traffic.

Both are continuously in optimization tracks. The numbers below are the first 90 days after CRO implementation.

https://dynastysales.nl
Live screenshot of dynastysales.nl
— Live CRO case 01

Dynasty Sales

B2B Sales AgencyDemo-funnel optimization4 tests in Q1

B2B sales agency wanted more demo requests out of their website traffic. We redesigned the hero CTA, social-proof placement and the demo form — plus ran 4 A/B tests. Result: nearly a doubling of the demo rate.

+47%Demo requests after hero-CTA test
+92%Form-completion rate
3.4 → 6.1%Visitor → demo conversion
See it live at dynastysales.nl →
https://voltafy.nl
Live screenshot of voltafy.nl
— Live CRO case 02

Voltafy

Energy SolutionsQuote-funnel rebuildForm redesign

Energy installer had a quote form where 76% of visitors didn't get through. We redesigned the flow (3 steps instead of 1 long form), added social proof, and built in realtime price indication. Conversion quadrupled.

4.2 → 18%Form-completion rate
+185%Quote → appointment conversion
-43%Cost per qualified lead
See it live at voltafy.nl →
What we build

Traffic is nice. Revenue is better.

A/B tests, funnel fixes, email flows and analytics — every step measurably optimized.

A/B test dashboardA/B test dashboard
Conversion funnelConversion funnel
Heatmap analysisHeatmap analysis
KPI trackingKPI tracking
Real-world examples

Four conversion wins that paid out directly.

Concrete A/B tests, email flows and funnel fixes — measurable impact within 4-8 weeks.

— Example 01
DACH hotel chain
→ Checkout A/B → +18% direct revenue

Booking flow from 5 to 3 steps + trust badges + price anchor. Test won at p<0.01.

— Example 02
Fashion DTC
→ Email lifecycle → +€840/mo MRR

Welcome flow 5 emails + cart-abandon 3-trip + winback 60d. ROAS 12x.

— Example 03
B&B owner
→ Google Ads CPA halved

Search-term audit + negative keywords + conversion tracking fixed. €38 → €19 per booking lead.

— Example 04
Salon Amsterdam
→ Reviews 4.2★ → 4.8★

WhatsApp reviews flow after every appointment + reply template for negative reviews within 24h.

The comparison

GrowthMaster CRO vs. typical CRO agency.

Honest confrontation of what you do and don't get.

Feature
GrowthMaster
Typical agency
Pricing model
Fixed price upfront
% of revenue
Tests per month
3-4 (Sprint) or 1-3 (Retainer)
"As it fits"
Statistical significance
95% required
"If you're lucky"
Hypothesis framework
RICE + evidence required
"We just try things"
Stack flexible
Works with what you have
Re-platform required
Weekly updates
Standard Loom + Slack
Monthly report
Lift attribution
Measured per test
"It all works"
Investment · A/B Test Sprint

Fair price. May offer. No %-deal.

Fixed price upfront. What you see below is what you pay — no revenue-share, no after-the-fact bill.

🔥 May offer · ends May 31, 2026

A/B Test Sprint · 12 weeks

Only 4 sprints in May · from June back to €1,495
CRO Audit + GA4 baseline60-min audit + complete data baseline + dashboard
€ 450
Hypothesis roadmapRICE prioritization · top-10 hypotheses · sprint plan
€ 350
3-4 A/B tests set upVWO/Optimizely/GA-Optimize · variant design · QA
€ 1,350
Statistical analysis + reportingConfidence interval, sample size, lift attribution
€ 450
Weekly Loom updates5-min videos · Slack thread · direct line
€ 250
Winner implementationPermanent roll-out of winning variants
€ 350
30 days post-sprint supportQuestions, follow-up tests, dashboard tweaks
€ 250
Total value € 3,450
MAY OFFER PRICE · your investment
€ 1,495€ 795
Book before May 31, 2026 · from June back to €1,495 · CRO Audit upfront included
Frequently asked questions

FAQ.

How much traffic do I need to A/B test?
For statistically significant tests you need at least ~1,000 unique visitors per variant per month at ≥2% baseline conversion. That's roughly 5,000-10,000 sessions/month total for a brand. Below that scale A/B testing doesn't work — then we focus on CRO Audit + Funnel Rebuild instead of tests.
Does CRO work for B2B sites with low traffic?
Yes, but differently. With B2B "conversion" is often a form submit for demo or contact, not a checkout. There we work less with A/B testing and more with UX research (5-second tests, user interviews, heatmaps), copy rewrites and funnel rebuilds. Dynasty Sales is a B2B case with this model: CRO Audit + Funnel Rebuild + 1-2 big tests per quarter.
Which testing tool do you need? Do I have to buy VWO/Optimizely?
No. We work with what you have. For brands without budget: Google Optimize alternative (GrowthBook, PostHog Experiments) or Microsoft Clarity + native A/B-test features in Shopify/WooCommerce. For budgets: VWO (~€200/m) or Optimizely (~€600/m). Tooling choice we make during the Audit based on your stack and budget.
What if a test doesn't win — money wasted?
Non-winning tests are valuable too — you now know a hypothesis doesn't work and can adjust direction. A typical CRO sprint has ~30% winners, ~30% losers, ~40% inconclusive. Goal: portfolio of winners overall > +20% conversion. Hence the portfolio guarantee: not one test, but the aggregate lift counts.
How long until I see results?
First test live week 2. First statistically significant result between weeks 4-6 (depending on traffic volume). Aggregate sprint lift measured at week 12. With Funnel Rebuild you see impact directly after launch — that doesn't have to wait for statistical confidence because it's a "global" improvement, not a variant test.
Does this work with our GA4 setup? Or does something need to be rebuilt?
First check during the Audit: GA4 conversions set up correctly? Events tracking? E-com data correct? About 60% of brands have GA4 issues that we fix first (free as part of the Sprint). Then we can do accurate baselines and lift measurements. Without proper measurement → no CRO possible.
What's the difference between Sprint and Retainer?
Sprint = one-time 12 weeks, fixed price €795 (May) / €1,495 (regular), 3-4 tests, ends after sprint. Good for: tackling a specific funnel challenge or if you're not yet sure CRO works for you. Retainer = ongoing €1,950/mo, 12-36 tests/year, lasting heatmap monitoring, quarterly roadmap. Good for: brands that want to optimize structurally as part of growth.
Can I switch from Sprint to Retainer later?
Yes — many clients start with Sprint to see if it fits and then switch. The €795 Sprint fee is credited against the first Retainer month if you switch within 30 days after sprint end. So effectively first 2 months Retainer for the price of 1.
Do I get a guarantee?
No rankings or traffic guarantee — those depend on Google updates and your implementation, so it would be dishonest to promise. Yes: 30-day satisfaction guarantee on the Sprint and Audit. Not happy with the roadmap or delivery? Full refund. Plus for Site in 1 week: live within 14 days or setup fee back (delivery, that I control 100%). Still not where you want to be after a Sprint? I'll work an extra month for free to find the fix.
K
About GrowthMaster

10+ years of online marketing & SEO. Five major brands. One focus.

I started my SEO career in-house at Holidu — holiday-rental search behavior at scale, one of the most competitive verticals online. Then senior roles at TUI, IKEA, vidaXL and Johnson & Johnson. Multi-market expansion, schema stacks on millions of pages, AI content at enterprise scale.

What I learned there I now apply as an independent consultant to DTC brands. Direct contact, direct delivery. No agency middle layer, no account manager, no reporting theater.

10+
years of e-commerce SEO
5
major brands in-house
Full-stack
web developer
AI
automation & LLMs expert
What clients say

Reviews from brands that truly grow.

Kelly worked for and with major e-commerce and DTC brands — Holidu, TUI, IKEA, vidaXL, Sprinter, J&J.

★★★★★
"With Kelly on the team our technical SEO finally aligned with what a platform of our scale needs. She spots patterns you won't find in dashboards."
J
Jana
Holidu
★★★★★
"We thought our multi-language setup was fine. Kelly showed us where we were losing 30% of organic traffic through bad hreflang and translation spam. Two months later: fixed and growing."
T
Thierry
Belvilla
★★★★★
"For outdoor and sport, understanding both SEO and CRO isn't optional — it's required. Kelly is the only consultant I've seen do both at the same time without either suffering."
I
Inge
Sprinter Sports
★★★★★
"At the scale of VidaXL, generic SEO advice is worthless. Kelly built an AI content pipeline that kept quality across thousands of product pages. No template spam — real SEO impact."
F
Filine
VidaXL
What I do differently

The magic is in the combination.
So is the trap.

AI & Automation, SEO and Web Design are each powerful on their own. Together they deliver a growth flywheel that keeps compounding. But used wrong, AI does more harm than good — and isolated SEO tricks or pretty sites without schema don't rank on Google either. The three disciplines have to talk to each other, not around each other.

AI & Automation
Wrong
ChatGPT prompts without SEO context, content published whenever, leads in a general inbox. Google's Helpful Content Update detects AI patterns and penalizes ranking — traffic drops.
Right
AI with keyword research upfront, schema in the template, lead routing & chatbot 24/7, email flows on autopilot. Content at scale in your voice · repetitive work gone.
SEO
Wrong
10 generic tips, same keywords everywhere. Slow site, no schema, no hreflang, no long-tail strategy — Google won't rank you for what matters.
Right
Long-tail keyword tree, schema stack, hreflang correct, niche-specific content. Found by people who really search — without ads.
Web Design
Wrong
Pretty hero, slow LCP, no social proof above-the-fold, generic checkout. Visitors bounce within 3 seconds.
Right
Mobile-first <2s, conversion elements in the right places, A/B testing baked in. Visitors become customers.
For those who want this done right

Not sure how to approach this properly?
Let's look at it together.

As an experienced online marketer, full-stack web developer, copywriter and AI expert, I'm your consultant and sparring partner — no account manager, no reporting theater, direct contact, direct delivery.

See what I do
★ Included with every package

Plus: your own branded dashboard.

Every GrowthMaster client gets a white-labeled KPI dashboard with own logo, own colors, own domain. Realtime visibility on what we're doing for you — no more PDF reports.

  • White-label: your logo + brand colors + custom domain
  • Multi-source: GA4 + Stripe + Calendly + custom CRM
  • Goal tracking + alerts via Slack/email
  • Live in 14 days, mobile + desktop responsive
See dashboard packages →
dashboard.yourbrand.com · KPI overview
MRR · this month€ 12,450
Organic clicks · 30d8,420
Calls booked23
Conversion rate4.2%
Goal MRR €15k83% reached

Stop burning budget on more ad spend.
Double what you already have.

30 minutes · free · no sales pitch. We look at your funnel, identify the top-3 friction points, and you get an honest estimate of conversion lift and investment — even if we're not the right partner.

🔥 May offer: CRO Audit FREE (€395 value) · A/B Sprint €795 (was €1,495) · max 4 sprints in May · ends May 31, 2026
Message Kelly directly