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White-label development for agencies

Your white-label development team for booking systems, portals and integrations, built under your brand.

When a client asks for more than a website, say yes. A senior engineer builds the custom parts behind your sites at a fixed partner price you can mark up, then maintains them on a care plan you resell.

Book a partner call How it works
Fixed partner price in 48h 100% white-label, NDA on request Weekly demos, no surprises
wizard@build ~ deploy
$ wizard deploy yourbusiness
✔ Client logins & portal  live
✔ Online booking          + reminders
✔ Invoices & card payments Stripe
✔ CRM & accounting sync   automatic
✔ Backups & monitoring    on
$ _
Built by one senior engineerNo handoffs, no outsourcing
10+Years building enterprise systems
2 to 8Weeks for a typical build
1:1One senior engineer, start to finish
100%Your code and data, no lock-in
Sound familiar?

Your clients want more than a website. Your team builds websites.

What agency owners tell us before we start working together:

“A client asked for online booking and payments, and we had to say we don't do that.”
“We quoted a custom feature, the freelancer overran, and we ate the cost.”
“Our developers are busy with sites, so integrations and portals sit in the backlog.”
“A client went to a software company for their app, and the website retainer went with them.”
“We'd love to offer care and support for custom builds, but nobody here can maintain them.”

If any of these sound like your agency, you're leaving projects and retainers on the table. See how the partnership works →

What we build

The custom work your clients ask for, built white-label.

Booking, payments, client portals, integrations and internal tools, delivered under your brand at fixed partner prices. Then we keep them running.

Client portals & dashboards

A secure place where your clients log in to see their account, invoices, bookings, files and requests. Plus a dashboard that shows you the numbers that matter.

Booking, membership & billing

Online bookings, class schedules, memberships and recurring payments with automatic reminders and invoices, so you stop chasing people.

Internal tools & admin systems

Replace the spreadsheets, paper forms and copy-paste with one system built around how your team actually works.

Integrations & automation

Connect your website, CRM, accounting, payments and email so data flows on its own and manual work disappears.

Websites that do the work

Fast, SEO-ready websites that capture leads and plug straight into your systems, not just a brochure.

Care, hosting & email

After launch we keep everything updated, backed up, monitored and secure, with email deliverability set up properly.

New · AI app rescue

Built something with Lovable, Bolt or Replit?

AI tools are great for the first version. We make it safe for real users: logins and permissions, exposed data and keys, payments, hosting and backups. Fixed-price audit from €390, white-label for agencies.

See how it works Free 20-minute check
How the partnership works

Five steps from client request to a live system, under your brand.

Each step is there to remove a risk agencies tell us about when they outsource development.

Send us the brief

“My client's request is vague.”

Forward the request or join a call together. We turn it into clear requirements, as your team, never as a third party.

Fixed partner quote in 48h

“Custom work always overruns.”

A written scope, timeline and one fixed price for you. Add your margin; the price never moves.

Build with weekly demos

“I can't see progress until it's too late.”

Working software every week on a staging link you can show your client, branded as yours.

Launch & handover in your name

“What if the client calls us with questions?”

Docs, training material and admin guides in your brand, so your team can answer with confidence.

Care plan you can resell

“Who maintains it after launch?”

We keep it secure, backed up and improving on a monthly care plan you resell as your own recurring revenue.

Our work

Systems we have built.

Real products in daily use, not mock-ups.

All case studies
SaaS platform · Fitness

Wod Lab: the all-in-one platform for boutique gyms

A complete product for functional fitness gyms: class booking, memberships, payments and member engagement, with each gym getting its own branded app.

  • Class schedules, bookings and waitlists
  • Booking credits with fair no-show and late-cancel rules
  • Memberships and recurring payments
  • Installable, branded app for every gym (PWA)
Visit wodlab.app
Admin dashboard of the client management system, shown with demo data
Client portal · Billing · Support

A client management system with portal, billing and tickets

The platform this website runs on: leads, clients, subscriptions, invoices and support tickets in one admin, plus a portal where clients log in, pay and ask for help.

  • Client portal with invoices, plans and tickets
  • Card payments by Stripe or bank transfer, auto-renewals
  • Lead inbox, CMS, blog and SEO built in
  • The same foundation can run your business
See the screens
Free download

Find the custom work your clients would pay for.

The Booking & Admin Leak Checklist: 25 yes/no checks to run with your clients (gyms, clinics, schools, services). Every unticked box is a project you could sell.

  • Booking, payments, reminders, customer data and reporting
  • Use it in discovery calls and quarterly reviews
Instant access. No spam, unsubscribe any time.
Charbel Zgheib, founder and lead engineer of Debugging Wizard Charbel Founder & Lead Engineer
Who builds it

Enterprise-grade engineering behind your agency.

Debugging Wizard is run by Charbel, a senior engineer with more than ten years of building complex systems for large organisations. He built Wod Lab, a booking and membership platform for gyms, and now works behind agencies as their white-label development team for booking systems, portals and integrations.

10+ years in enterprise systemsComplex integrations and workflows for large organisations in finance, where an error is not an option.
Built and runs Wod LabA class booking and membership platform for functional fitness gyms, so we know your day from the inside.
Invisible to your clientsNo logo, no credits, no direct contact unless you want it. NDA on request.
One accountable engineerThe person on your partner call writes the code and supports it after launch. Clean, documented code your client owns.
More about us
Who it's for

White-label development for web, design and marketing agencies.

You keep the client, the relationship and the margin. We build the custom parts quietly in the background.

Web & design studios

Add booking, portals and integrations to the sites you already build, without hiring developers.

Marketing agencies

Lead forms that sync to the CRM, landing pages with payments, dashboards your clients actually use.

WordPress, Shopify & Webflow partners

Custom plugins, apps and back-end logic when the platform alone isn't enough.

Clients in fitness & wellness

Class booking, memberships and payments. We built Wod Lab, so we know this world inside out.

Clients in health & education

Appointments, intake forms, enrolment, student and patient portals.

Clients in services & hospitality

Quotes, deposits, reservations and client logins in one system.

Book a partner call

Pricing

Fixed prices, no hourly surprises.

Every project starts with a free call and a written, fixed quote. Agencies get partner rates with room for your margin.

Focused system

One clear job done properly, for example a client portal, online booking or a quoting tool.

from€2,500 one-off projectexcl. VAT
Typical timeline2 to 4 weeks
Start a project
  • Discovery workshop & written scope
  • One core module (portal, booking, billing…)
  • Admin panel for your team
  • Card payments and invoices if needed
  • Launch, training & handover docs
Most chosen

Business system

The system your business runs on: clients, bookings, billing and reporting in one place.

from€6,000 one-off projectexcl. VAT
Typical timeline4 to 8 weeks
Start a project
  • Everything in Focused system
  • Several connected modules
  • Integrations with your CRM, accounting or email
  • Dashboards & reports
  • Data migration from spreadsheets
  • 30 days of free fixes after launch

Platform

Bigger builds: multi-location, multi-tenant or a product you sell to others, like a SaaS.

Custom quote
Typical timelinePhased roadmap
Start a project
  • Everything in Business system
  • Architecture & roadmap
  • Multi-user roles & locations
  • API for apps and partners
  • Delivered in phases you can launch

After launch, care plans from €99/month, which agencies can resell as their own · See care plans · Partner details

Free tools

Check your website and email in seconds.

Free diagnostics and developer utilities, no sign-up needed. Found a problem? We can fix it for a fixed price.

All 15 tools

Email Deliverability Checker

Check SPF, DKIM, DMARC and MX records and get a deliverability score.

→ run free check

DNS Lookup

Look up A, AAAA, MX, TXT, NS, CNAME, SOA and CAA records for any domain.

→ run free check

SSL Certificate Checker

See issuer, expiry date, covered domains and days left on any SSL certificate.

→ run free check

HTTP & Security Headers

Inspect HTTP headers, redirects and grade your security headers.

→ run free check
From the blog

Practical guides for growing businesses.

Systems, websites, performance and email, explained clearly.

View all articles
FAQ

Questions, answered.

How much does a custom system cost?

Most projects land between €2,500 and €15,000 depending on scope. After a free call we send a fixed quote, so you know the full price before any work starts, paid in milestones.

How long does a project take?

A focused system such as a client portal or booking setup usually takes 2 to 4 weeks. Larger business systems take 4 to 8 weeks. You see working progress every week.

Who owns the code and the data?

You do. You get the full source code, your data and documentation. There is no lock-in: if you ever want another developer to take over, they can.

Do I need a care plan after launch?

It is optional but recommended. A care plan keeps the system updated, backed up and monitored, and gives you hours each month for changes. Plans are monthly and you can cancel any time.

Can you work with the tools I already use?

Yes. We regularly connect WordPress, Stripe, Google Workspace, Microsoft 365, Mailchimp, HubSpot and accounting tools, so your new system fits into what you have.

How do I pay?

Projects are paid in milestones by bank transfer or card. Care plans are billed monthly by card or invoice, and every invoice is in your client portal.

Can you fix a one-off problem without a project?

Yes. Email deliverability fixes, broken forms, slow sites: tell us what is wrong and we will send a fixed quote before starting.

Running your business on spreadsheets?

Tell us how things work today. We reply within one business day with ideas and a rough budget.

Start a project Book a free call