04
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Web design, acquisition & conversion
Growth & UX
built around what actually works.
Meta Ads, Google Ads and ChatGPT Ads (GEA) — paid acquisition on social, search and inside AI answers. Lead generation, funnel optimisation, activation flows and nurturing. CRM setup & management, UX conversion and A/B testing. We doubled lead volumes for clients in under 90 days — without doubling budgets.
The reality
A social agency will always recommend social. An SEO agency will always recommend SEO.
We don't have a product to push. We start from your objectives and build the plan that fits — whatever the channel or method.
Before handing your acquisition to an agency, know how to evaluate its real ability to move your conversions.
For who
Building or launching a product
Traffic but no conversions
Scaling but acquisition is stalling
No idea which channel to invest in
Situation 1
Building or launching a product
We research, design and plan the launch.
You have a product idea or an early version. We research the market, design the experience and define the go-to-market — so you don't build the wrong thing for the wrong people.
Situation 2
Traffic but no conversions
We find what's blocking conversion and fix it.
Visitors come, nothing happens. We audit the full funnel, identify what's blocking conversion and deliver a prioritised action plan — page by page, step by step.
Situation 3
Scaling but acquisition is stalling
We find the next growth levers.
Growth was working, now it isn't. We find the new levers — new channels, new audiences, new approaches — and define the plan to activate them.
Situation 4
No idea which channel to invest in
We tell you where to put your money.
Paid? SEO? Social? Referral? We audit your market, your competitors and your current data to tell you where to put your next euro — without the bias of a single-channel agency.
What we deliver
No pre-packaged solution. We combine the right methods based on where you are and what you need.
Growth Audit & Opportunity Mapping
We map your funnel, your acquisition channels and your conversion blockers. We identify where the biggest gains are — before recommending anything.
Market & User Research
Desk research, user interviews, surveys or digital quantitative testing. We choose the right method for your questions and budget. Solid conclusions without overspending on process.
UX & Customer Journey Mapping
We map how users actually move through your product or website — where they drop, where they convert, what's getting in the way.
Product & Interface Design
App screens, websites, landing pages. Designed around user behaviour and business objectives, not trends.
Growth & CRO Strategy
A prioritised plan to improve conversion and acquisition — with clear recommendations on which channels to invest in, which pages to fix and in what order.
Go-to-Market Plan
Positioning, channel strategy, acquisition setup and launch sequencing. A clear plan your team can execute — or that we help you brief to the right partners.
Our approach
01
Audit
Funnel analysis, channel performance, user behaviour and competitive landscape. We map the gaps before we fill them.
02
Priorities
We identify the highest-leverage actions based on your stage, budget and objectives. No pre-set approach, no default playbook.
03
Plan & design
Research, UX design, growth strategy, channel recommendations. We deliver a clear plan with the briefs your team needs to execute.
04
Measurement framework
We define how to track what matters — acquisition cost, conversion rate, user retention — so your team knows what good looks like.
The four steps above are our full engagement. But every project is different: depending on what you already have and how much time you have, we do everything, only part of it, or a short, intensive piece of work.
For big projects: launching a business, changing your positioning, entering a new market. We're with you from start to finish.
You've already done part of the work: studies, figures, clear ideas? We don't redo what exists, we pick up from there. Shorter, and less expensive.
A decision to make fast, an idea to test? In a few days of workshops with your teams, we decide and move forward. Shorter, more direct, and often more surprising.
Engagement formats
Same expertise, three ways of working. You choose based on your teams and your budget.
You don't have the team or the time: we deliver the work end to end, on a fixed scope and price.
Your teams produce; we frame, challenge and review at every key step.
Trainings and workshops on your own cases, so the skills stay with you.
IN THE SPOTLIGHT
You don't need a six-month engagement to know what's holding your growth back. Our digital audit is a flexible-scope diagnosis — you pick the questions that matter, we put numbers on where you lose sales, and you leave with a prioritized action plan. In about 3 weeks. No commitment.
Request an audit✓
A quantified diagnosis
We put real numbers on your funnel — visibility, leads, conversion, campaigns — so you know exactly what's costing you sales, and why.
✓
A scope you choose
Six angles, you tick the ones that matter. The audit adapts to your questions, not a fixed formula.
✓
A plan, not a report
Immediate quick-wins plus a short / mid / long-term roadmap, ranked by impact — ready for your team to execute.
✓
Fast, low-commitment
Around 3 weeks, fixed fee, no engagement. The clearest first step before spending on growth.
Selected cases
Wikipreneurs
Wikipreneurs: from zero to a running growth engine in three and a half weeks
A trusted name in entrepreneurship, a new product to bring to market, and no marketing team. We became that team: an acquisition engine built from zero in three and a half weeks, validated as a POC, on track for the lead target set for March 2027 — and an SEO/GEO programme now under way.
Read the full case →
Unibricks: from lead volume to lead value
Unibricks had no shortage of leads. That was never the problem. Few were qualified, the sales team spent its days sorting rather than selling, and no reporting connected media spend to what a lead was actually worth. We audited, built the qualification method, proved it on the critical projects, then handed it back to the team.
Read the case →
HM Sewertech: brand creation & growth marketing
We took full ownership of HM Sewertech's digital presence — starting with a brand built from scratch, then the engine that turned it into leads. +40% leads in year one, +101% in year two.
Read the case →Wikipreneurs: from zero to a running growth engine in three and a half weeks
A trusted name in entrepreneurship, a new product to bring to market, and no marketing team. We became that team: an acquisition engine built from zero in three and a half weeks, validated as a POC, on track for the lead target set for March 2027 — and an SEO/GEO programme now under way.
Read the case →
AGC Europe: from a B2B glass business to a direct-to-consumer launch
AGC Europe, a leading European glass provider, wanted to know if selling glass directly to consumers online was a real opportunity. We evaluated the market, defined the MVP, launched it on a test market and coached the team to profitability — end to end in 7 months.
Read the case →
Verisure: double-digit online lead growth, self-financed
Verisure, Europe's leading monitored-alarm provider, wanted to grow online leads by 25% in Belgium and double them in the Netherlands — self-financed, within budget. We reviewed the engine, designed a 360° plan and coached the teams: +20% in Belgium, ×1.75 in the Netherlands.
Read the case →“
Speed of light understanding of our business — a no-nonsense, straight to point approach. The full executive committee, including shareholders, were impressed.
The team
25 years of digital and marketing each, in large groups as well as startups. And a network of specialists we bring in when your project needs it.
More about us →
Former Digital Director at Orange Belgium and Head of e-Business at Brussels Airlines.
Former Strategy & UX Director at Emakina, founder of Epicurien.be.
Go further
Belly & Brain is a Brussels agency specialised in websites, acquisition and conversion. It works on the whole chain — website, traffic, conversion, CRM — or only on the missing link, for companies of every size in Belgium (Brussels, Wallonia, Flanders) and internationally.
Most of the time the problem is not traffic volume but the chain: an unclear message, the wrong audience, forms that are too long, missing proof or no sales follow-up. A conversion audit shows where visitors drop off and what to fix first.
Not necessarily. Belly & Brain starts by measuring where the chain leaks. Sometimes a rebuild is needed; often, fixing the journey, the key pages and lead follow-up is enough to improve results without rebuilding the site.
It depends on the starting point. For the SME HM Sewertech, enquiries grew by 40%, then by 101% year on year. For CLL, organic traffic grew by 30%, and by up to 200% on lead-generation pages.
It is a flexible-scope diagnosis: you choose the questions that matter, Belly & Brain puts numbers on where you lose sales and hands you a prioritised action plan, in about 3 weeks.
No. Belly & Brain has no channel to push: the plan starts from your goals and combines what works for you — SEO, advertising, website, CRM or automation.
Ready when you are
30 minutes. No pitch deck. Just an honest conversation about where you are and where you want to go.
A project in mind? Let’s talk.
Belly for instinct, Brain for evidence. A digital & marketing consultancy for startups, SMEs and large groups, in Belgium and abroad.
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