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Custom Plugin & App Development

Every WordPress or Shopify business eventually hits a wall — a workflow no marketplace plugin quite covers, or an integration that has to be custom-wired. We build purpose-built plugins and apps from scratch: fixed price, WordPress and Shopify coding standards, documented handover.

Fixed price
Agreed before dev starts
No hourly billing
Scope-controlled delivery
Documented
Handover on every build
No Obligation — Free

Tell Us What Needs to Be Built

Describe the feature or integration and we'll come back with a plain-language scope and fixed quote.

No obligation · Response within 24 hours · 100% confidential

Fixed price
Quoted before work starts
WordPress & Shopify
Platform specialists
Version controlled
Git throughout every build
Bug-fix window
Included on every delivery

Six Types of Custom Development

From a single-feature WooCommerce extension to a full Shopify app on the Admin API — scoped, built and delivered at a fixed price.

Custom WordPress Plugin Development

A plugin built from scratch around one specific business requirement, not adapted from a generic template. Written to WordPress coding standards so it keeps working through future core, theme and plugin updates.

Elementor & Block Editor compatibleWordPress coding standardsClean install / uninstallDocumented codebase

WooCommerce Custom Feature Development

Extending WooCommerce with logic the default checkout, pricing or product system cannot do on its own — custom pricing rules, conditional shipping, bespoke product types, quote-based ordering, or admin reporting dashboards.

Custom checkout logicPricing & discount rulesCustom product typesAdmin dashboards

Shopify Custom App Development

Private or public Shopify apps built on the Admin and Storefront APIs (REST & GraphQL) with App Bridge, for stores that need functionality the Shopify App Store simply does not offer.

Admin & Storefront APIEmbedded apps (App Bridge)Webhooks & automationLiquid theme integration

Third-Party API Integrations

Connecting a WordPress or Shopify site to the tools the business already runs on — CRMs, payment gateways, shipping carriers, marketing platforms, accounting software or internal systems, via REST or GraphQL.

CRM / ERP integrationPayment gateway integrationMarketing platform syncCustom webhooks

Plugin & App Modernisation

Auditing an existing custom plugin or app that has become slow, insecure or fragile after years of patchwork edits by different developers, then refactoring it against current platform standards.

Code auditPerformance refactorSecurity hardeningUpdate compatibility fixes

Ongoing Maintenance & Support

Continued development support after launch — new feature requests, compatibility fixes when WordPress core or the Shopify API updates, bug fixes, and priority turnaround for anything client-facing that breaks.

Version compatibility checksBug fixesFeature requestsPriority response

The Problem. Our Approach.

The Problem
Our Approach
A marketplace plugin almost does what's needed, but not quite
A feature built around the exact requirement, no workaround needed
Three plugins stacked together to cover one feature
One purpose-built plugin replacing the stack — less conflict, faster site
No app in the Shopify App Store covers a specific workflow
A private custom app built directly on Shopify's Admin API
An old custom plugin breaks on every WordPress update
Full code audit and refactor against current WordPress standards
No developer left who understands the current plugin
Documented handover with commented, maintainable code
Previous quote was open-ended hourly billing with no ceiling
Fixed price agreed in writing after scoping, before development starts

WordPress Plugin vs. Shopify App

Which platform applies depends entirely on where your site already lives. A short reference for scoping conversations.

FactorCustom WordPress PluginCustom Shopify App
Best forBusiness logic, WooCommerce extensions, custom admin toolsStore-specific automation, checkout extensions, admin workflows
Built withPHP, WordPress Plugin API, WooCommerce hooksShopify Admin / Storefront API (REST & GraphQL), App Bridge
Editor compatibilityElementor and Block Editor (Gutenberg)Shopify theme editor (Online Store 2.0 / Liquid)
Where data livesWordPress database (custom tables or post meta)Shopify-hosted, or external database via the app backend
DistributionInstalled privately on the client's sitePrivate app on the specific store, or listed on the Shopify App Store
Update responsibilityMaintained by our team, versioned releasesMaintained by our team, tested against Shopify API version updates

Six Steps from Brief to Live

01

Discovery & Requirements

A direct conversation about what the feature or integration needs to do, who uses it, and what 'done' looks like. No jargon, no assumptions carried over from a generic template.

02

Technical Scope & Fixed Quote

A written scope covering exactly what will be built, which hooks, APIs or data sources it touches, and a fixed price agreed before development starts. Anything outside that scope is quoted separately and approved first.

03

Development

Built on a staging environment, following WordPress or Shopify coding standards, with version control throughout. Your live site is never touched directly during development.

04

Testing & Compatibility Checks

Tested against your active theme and existing plugins (WordPress) or store theme and installed apps (Shopify), plus the specific browsers and devices your business actually uses.

05

Deployment & Handover

Deployed to the live site with a rollback plan in place. Short documentation is handed over so your team knows what the feature does and how to use it.

06

Post-Launch Support

A defined bug-fix window after delivery, plus the option of an ongoing support arrangement for future feature requests and platform-update compatibility.

What's Included in Every Project

Scope & Planning

  • Written technical scope agreed before development starts
  • Fixed price quote — no open-ended hourly billing
  • Platform recommendation explained in plain terms

Development

  • Clean, commented code following platform standards
  • Version-controlled codebase (Git)
  • Compatibility check against active theme and other plugins / apps
  • Staging environment build and testing before anything goes live

Testing & Deployment

  • Functional testing against the agreed scope, item by item
  • Rollback plan confirmed before deployment
  • Live deployment with monitoring immediately after launch

Handover & Support

  • Admin-facing documentation for how to use the new feature
  • Defined bug-fix window included after delivery
  • Ongoing maintenance and feature-request support available on request

Fixed Price. No Hourly Billing.

Every project is quoted at a fixed price after the scoping conversation — consistent with how the rest of the site's services are priced.

Simple, single-feature plugins and small automations sit at the lower end. Multi-step Shopify apps, WooCommerce checkout rebuilds, or third-party API integrations with several endpoints sit higher. No work begins on anything outside the agreed scope without a separate quote and sign-off.

Get a Fixed Quote
Simple plugin / automationLower end — scoped per feature
WooCommerce checkout rebuildMid range — depends on scope
Shopify app with multiple integrationsHigher end — API complexity
Third-party API integrationPer endpoint — quoted after scoping

Frequently Asked Questions

Tell Us What Needs to Be Built

Describe the feature or integration in plain language. We'll come back with a written scope and fixed price — no obligation.

Get a Fixed QuoteView All Services

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