Pomnex
Custom WordPress Plugin Development

Custom WordPress plugin development, built around your requirement

When nothing in the plugin directory fits, or the closest option only half fits, Pomnex builds a plugin that does exactly what your business needs.

See what we build
  • Built to your exact requirement
  • Clean, maintainable code
  • Security reviewed
  • Small projects from $490

What we build

Custom WordPress plugins for the requirement you actually have

Examples of what custom development covers. Each one is built specifically for the business that asked for it.

Custom business functionality

Rules, calculations, and logic specific to how your business works, implemented properly inside WordPress rather than bolted onto the side of it.

Custom admin tools

Screens, settings, and bulk actions built for the people who run the site every day, so routine work stops needing a developer.

Automation

Work that happens by hand today, like imports, exports, notifications, and scheduled jobs, moved into code that runs on its own.

API integrations

WordPress connected to the services your business already runs on: CRMs, ERPs, payment providers, shipping, internal systems.

WooCommerce functionality

Pricing rules, product logic, checkout behaviour, and order workflows that WooCommerce and its extensions do not cover on their own.

Custom dashboards

Reporting and operational views built from data your site already holds, presented the way the people using it need to read it.

Third-party service integrations

Data moving both ways between WordPress and an external tool, with the failure cases handled rather than ignored.

Internal business workflows

Approval steps, role-specific screens, and internal processes running inside WordPress instead of in a spreadsheet beside it.

A custom plugin needs looking after once it's delivered, so it keeps working as WordPress changes. Ongoing WordPress maintenance takes care of that.

Examples from our work

WordPress plugins we've built and published

Most custom work stays under the client's name. These plugins are ours, so the source code is public and you can read exactly how we write it.

Open source

Pomnex Update Check

A free plugin that checks a site's most important pages after every WordPress, plugin, or theme update, and emails the owner if something broke, before a customer notices.

  • WordPress 6.2+
  • PHP 7.4+
  • WooCommerce
  • PHPUnit tests
  • GPLv3
View the source on GitHub
  • Watches up to 5 pages, such as checkout, contact, and login, each with a marker that must stay on the page
  • Runs after manual and automatic updates, and compares each page with its last working state
  • Catches missing elements, broken shortcodes, visible PHP errors, stylesheets or scripts that fail to load, and pages that got slower
  • Keeps an update log: what changed, from which version to which, and what the check found
  • Runs entirely on the site: no account, no external service, no data sent anywhere
The Status tab of Pomnex Update Check in wp-admin, showing a passing check for the home, shop, my account, and contact pages.
The Status tab after a check, on a test WooCommerce site.

Every plugin we publish is built to the standards on this page, and its code is open for anyone to review. See all our plugins on GitHub

How we build

Our development principles

The same standards we hold the systems we operate ourselves to.

Clean code

Readable WordPress code that follows the usual conventions, so another developer can understand it and keep working on it easily.

Clear architecture

The structure is decided before the first line is written, so the plugin stays understandable as it grows past its first version.

High security

Input validated, output escaped, capabilities checked, queries prepared. All of it is part of how the code is written from the start.

Compatibility

Built on the official WordPress APIs and standards, so core, theme, and plugin updates go through without surprises.

Maintainability

Documented, consistent, and well organized, so a change six months from now is a small job.

Scalability

Written to handle the data volume you expect to reach in the future.

Process

How a custom plugin project runs

Five steps, with the approach and the price agreed before any code is written.

  1. Tell us what you need

    Describe the problem in your own words. You don't need a technical specification; a description of what your business needs is enough to start.

  2. We review the requirements

    We work out what the plugin has to do, ask about the cases that are not obvious yet, and look at what your site already runs.

  3. We propose the approach and quote

    You get the technical approach, the scope, and the price in writing before anything is committed to.

  4. We develop and test

    The plugin is built and tested on a copy of your actual site, with its settings and plugins.

  5. We deploy and support

    We deploy it, confirm it behaves in production, and stay available for what comes after launch.

Pricing

How much a custom WordPress plugin costs

Every project gets its own written quote, but you shouldn't have to ask just to find out whether we fit your budget.

Small projects start from

$490one-time, per project

A small project is one clear feature with a defined scope: built, tested on a copy of your site, deployed, and supported after launch. The price is fixed in writing before any code is written.

What a small project usually looks like

  • A custom admin screen, setting, or bulk action
  • A WooCommerce pricing, product, or checkout rule
  • A shortcode or block that shows data your site already has
  • A one-way connection to a single external service
  • Extending an existing plugin through its hooks, so the change survives updates

What moves a project above the starting price

  • Integrations with several systems, or data syncing both ways
  • Handling the failure cases of external APIs: retries, queues, and alerts
  • Custom dashboards, reports, or complex user roles
  • Large data volumes or high-traffic WooCommerce stores
  • Multisite, multilingual, or an unusual hosting setup

You get the scope and a fixed price in writing first. If the work grows, we quote the change before doing it.

Who it's for

Who we build custom WordPress plugins for

Different starting points, one problem in common: WordPress does not do the thing you need it to do.

Businesses

Companies whose day-to-day depends on WordPress doing something specific that nothing on the market does.

Website owners

Owners who have hit the ceiling of what page builders and off-the-shelf plugins can be configured into doing.

Agencies

Agencies who need a plugin built properly for a client project, on their own delivery timeline.

WooCommerce businesses

Stores with pricing, shipping, or checkout rules that WooCommerce and its extensions do not cover.

Companies needing custom WordPress functionality

Teams connecting WordPress to the internal systems the rest of the business already runs on.

FAQ

Custom plugin development FAQ

The questions people ask us before requesting a quote.

How much does a custom WordPress plugin cost?

Small projects start from $490: one clear feature, such as a custom admin tool or a WooCommerce rule. Larger work, like an integration with several systems, costs more because it is a bigger job. We send a fixed written quote for each project after reviewing your requirements, so the price is based on your actual scope.

How long does plugin development take?

A small, well-defined plugin is usually a matter of days. Something that integrates with external systems, and has to handle their failure cases, takes longer. You get a timeline together with the quote, once the requirements are clear enough to commit to one.

Can you integrate WordPress with an external API?

Yes. API integration is one of the things clients ask us for most: connecting WordPress to a CRM, an ERP, a payment or shipping provider, or an internal system, with authentication, retries, and error handling included in the work.

Can you build custom WooCommerce functionality?

Yes. We build custom WooCommerce plugins for pricing rules, product logic, checkout behaviour, order workflows, and integrations with the systems that handle fulfilment or accounting.

Can you modify an existing plugin?

Often, yes, but the approach matters. We avoid editing a third-party plugin's own files, because its next update would erase the change. Instead we extend it through its hooks and filters, or build a companion plugin alongside it, so your customisation survives updates.

Will the plugin be compatible with future WordPress updates?

We build on WordPress's documented APIs and coding standards, which keeps a plugin working across new core releases. Still, any plugin needs some attention as WordPress evolves, which is why we offer our ongoing WordPress maintenance plan.

All systems operational

Tell us what your plugin needs to do

Describe what you need in plain language. We'll send you a technical approach, a scope, and a price before you commit to anything.

Ask a question