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001

Looking for an award winning Shopify Plus agency?

Upgrade to Shopify Plus with Fourmeta, a leading Shopify Plus agency. We are a full service agency and accredited Shopify experts who specialise in creating customised solutions that convert!
002

Turbocharge your conversions in just 60 minutes!

Get in touch today and receive a FREE workshop session with a Shopify expert worth £250! We'll identify engagement gaps, create solutions, and share immediate fixes to boost your conversion rates.
003

With a wide portfolio of clients, we're the go-to agency for all things digital.

Wherever you're based and whatever sector you operate in, from startup to massive enterprise - share your ideas, and bring us your challenges.
Contact us
All Services
All Services
001

Looking for an award winning Shopify Plus agency?

Upgrade to Shopify Plus with Fourmeta, a leading Shopify Plus agency. We are a full service agency and accredited Shopify experts who specialise in creating customised solutions that convert!
002

Turbocharge your conversions in just 60 minutes!

Get in touch today and receive a FREE workshop session with a Shopify expert worth £250! We'll identify engagement gaps, create solutions, and share immediate fixes to boost your conversion rates.
003

With a wide portfolio of clients, we're the go-to agency for all things digital.

Wherever you're based and whatever sector you operate in, from startup to massive enterprise - share your ideas, and bring us your challenges.
Close menu
All Services
All Services
001

Looking for an award winning Shopify Plus agency?

Upgrade to Shopify Plus with Fourmeta, a leading Shopify Plus agency. We are a full service agency and accredited Shopify experts who specialise in creating customised solutions that convert!
002

Turbocharge your conversions in just 60 minutes!

Get in touch today and receive a FREE workshop session with a Shopify expert worth £250! We'll identify engagement gaps, create solutions, and share immediate fixes to boost your conversion rates.
003

With a wide portfolio of clients, we're the go-to agency for all things digital.

Wherever you're based and whatever sector you operate in, from startup to massive enterprise - share your ideas, and bring us your challenges.
Close menu
Works
About
Insights

Shopify app development company for complex ecommerce requirements

We design, build and support custom Shopify apps, integrations and extensions for established ecommerce brands. From ERP and 3PL integrations to checkout logic, product configurators and internal operational tools, every solution is built around your commercial requirements—not a generic app template.
Scope your Shopify app

Achievements that we’re proud of

100+
Shopify websites delivered
93%
Annual client retention
60+
ecommerce specialists
Custom Shopify Apps

When an off-the-shelf Shopify app is no longer enough

Standard Shopify apps are usually the right choice for common ecommerce requirements. But growing brands often reach a point where generic workflows, disconnected systems and overlapping subscriptions create more cost and operational friction than they remove.  Fourmeta builds custom Shopify apps when the requirement is specific to your business: proprietary fulfilment logic, complex product configuration, tailored B2B workflows, customer-account functionality, checkout rules or direct integrations with the systems running your operations.
Shadyveu

Do you need a custom Shopify app —or a better existing solution?

Get a buy-versus-build assessment

Custom Shopify app development services

ERP, CRM and operational integrations

001

Connect Shopify with ERP, CRM, PIM, WMS, accounting, inventory and fulfilment platforms without relying on fragile spreadsheet or middleware workflows.

Checkout extensions and Shopify Functions

002

Build supported discount, validation, shipping, payment and checkout experiences using Shopify’s current extension and Functions architecture.

Checkout extensions and Shopify Functions

002

Build supported discount, validation, shipping, payment and checkout experiences using Shopify’s current extension and Functions architecture.

Internal operations apps

004

Give ecommerce, service and fulfilment teams purpose-built admin tools that remove repetitive work and reduce errors.

Theme, admin and Flow extensions

001

Add functionality directly to Shopify themes, admin screens, product records, orders and Flow automations using supported Shopify extensions.

Data and analytics applications

003

Collect, clean and synchronise commercial data across Shopify, analytics, marketing and reporting systems.

And of course, existing-app rescue and modernisation. Audit, stabilise or rebuild legacy Shopify apps that have become unreliable, insecure or incompatible with current APIs

Turbocharge your conversions in just 60 minutes!

Start with an App Feasibility & Architecture Sprint

Before committing to development, we determine whether the requirement should be solved with an existing app, an integration, Shopify configuration or a custom build.

Our custom Shopify apps development process

Commercial and technical discovery

001

We document the business problem, users, current workflow, systems, constraints and measurable outcome before recommending a solution.

Buy-versus-build decision

002

We evaluate existing apps, Shopify-native capabilities, integration options and custom development. If an existing solution is commercially better, we say so.

Our Migration Process

Architecture and specification

003

We define data flows, API requirements, Shopify extensions, hosting, permissions, security controls, edge cases and release requirements.

Prototype and user validation

004

For customer-facing and internal tools, we prototype critical workflows before committing to full production development.

Our Migration Process
Ultralight

Iterative development

005

The app is built in reviewable stages, with regular demonstrations and access to the delivery backlog.

QA and performance testing

006

We test permissions, failure states, high-volume behaviour, API limits, integrations, devices and trading-critical scenarios.

Controlled release

007

Deployment includes staging, migration, monitoring, rollback planning and trading-team support.

Maintenance and improvement

008

Post-launch support covers monitoring, incident response, Shopify API upgrades, security updates and planned feature development.

Opro

Start

Finish

Why choose Fourmeta UK Shopify Plus CRO services?

  • Commercial thinking before code

    001
    The engagement starts with the business problem and measurable outcome, not a predetermined technology.
  • Shopify-specific architecture

    002
    We understand Shopify’s plan restrictions, Functions, extensions, APIs, webhooks and operational limits.
  • Ownership and maintainability

    003
    Scope, code access, intellectual-property ownership, documentation and ongoing responsibilities are agreed before development begins.
  • Product, UX and engineering together

    004
    Customer-facing and internal apps are designed as usable products, not just technical integrations.
  • Experience with complex ecommerce stacks

    005
    Fourmeta works across storefront, checkout, data, ERP, CRM, fulfilment and marketing systems—not only isolated Shopify features.
Results-driven UX & CRO design strategies
Dan John

“We’ve seen +20% growth in sales, an infrastructure to track initiatives, and our highest grossing months in company history.” We took an iconic Italian fashion house into the 21st century.

  • 20% More conversions
  • 135% increased customer retention
See case study
Results-driven UX & CRO design strategies

Frequently asked questions

What is a custom Shopify app?

A custom Shopify app is built for a specific merchant or group of stores. It can connect Shopify with other systems, automate internal workflows or add functionality that is not available through Shopify’s standard features and public apps.

Do we need Shopify Plus?

Not for every custom app. Shopify Plus is required for some advanced checkout and custom Shopify Functions use cases. We assess plan compatibility during discovery before recommending an architecture.

How much does a Shopify app cost?

Simple tools and integrations commonly start between £5,000 and £15,000. Customer-facing or multi-system applications typically require larger budgets. The final cost depends on workflows, integrations, security, data and maintenance requirements.

How long does custom app development take?

A focused integration or internal tool may take four to eight weeks. More complex customer-facing or multi-system applications can take three months or longer.

Can you integrate Shopify with our ERP, CRM or 3PL?

Yes. Fourmeta builds and supports integrations with ecommerce, inventory, fulfilment, customer, finance and marketing systems.

Costs

How much does custom Shopify app development cost?

Custom Shopify app budgets depend on the number of users, systems, workflows, data requirements and Shopify surfaces involved. Typical UK project ranges are:Simple internal tools or integrations: £5,000–£15,000, Customer-facing apps and moderate integrations: £15,000–£40,000, Complex, multi-system or enterprise applications: from £40,000. Ongoing hosting, monitoring and maintenance should also be budgeted. The feasibility sprint produces a more accurate scope and three-year cost model
Contact us today

Just a few of our favourite projects…