CUSTOM APPSShopify App Development

Shopify App Development for Your Business Ideas

A unique business problem deserves a tailored solution.

We build custom Shopify apps, integrations and automations for store owners, and public apps for agencies and founders. We first check what Shopify and existing apps already do, and build only what’s missing.

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Official Shopify Partner Since 2015 · Shopify store migration, design and development. View profile ↗
20+ years in ecommerce

What we build

  • Custom Shopify appsTools built around one store’s way of working
  • Public appsApps for many merchants, from plan to maintenance
  • API integrationsSuppliers, ERP, CRM, shipping and fulfillment
  • Shopify automationRules-based workflows and AI-assisted steps
  • Support & maintenanceFixes, updates and changes after launch

Scope is confirmed after we review your Shopify plan, access and data.

For store owners

Which part of your business doesn’t fit Shopify as it comes?

Most store owners come to us with one of the same few problems. A custom app, an integration or a simple automation can often close the gap.

Systems that don’t talk to each other

Orders, stock and customer records are re-entered between Shopify, your ERP, CRM or supplier systems.

Reports and reconciliation by hand

Someone exports files, matches records and fixes the differences in a spreadsheet every week.

Exceptions that get missed

Stock, order or fulfillment problems sit across tools without a clear owner or next action.

A rule only your business has

Special pricing, order routing, approvals or product data that Shopify and the App Store don’t cover.

An app that no longer fits

An app you rely on is slow, broken, out of date or does almost, but not quite, what you need.

An idea for your own app

You want to turn an internal tool or a new idea into a Shopify app, for one store or for many.

Shopify app development services

What we build for Shopify stores

Choose one focused app or a broader project. We confirm the available tools, data and access before agreeing a scope.

Custom Shopify apps

  • Admin tools for orders, products and customers
  • Custom data, settings and business rules
  • Built on Shopify’s Admin API
  • Installed on your store, or your Plus organization

You get: A scoped custom app for your store, with the agreed features documented and tested.

Shopify API integration

  • Suppliers, ERP, CRM and accounting
  • Inventory, shipping and fulfillment systems
  • One-way or two-way sync, where the other system allows it
  • Retries, logging and error alerts

You get: Mapped data flows with a clear owner for every error and exception.

Workflows & internal tools

  • Order routing, tagging and approvals
  • Reporting and reconciliation views
  • Dashboards for your team
  • Queues for items that need a person

You get: A tool your team can use daily, built around how they already work.

Shopify automation

  • Rules-based workflows and scheduled jobs
  • Shopify Flow where it already does the job
  • Functions and extensions where your plan supports them
  • Alerts when something fails

You get: An automation with defined triggers, limits and a way to switch it off.

Existing app improvements

  • Review of an app you already use
  • Troubleshooting, fixes and performance work
  • Updates for API and platform changes
  • Documentation and handover

You get: A written finding, a fix plan and agreed changes, not a surprise rebuild.

Public Shopify apps

  • Planning and architecture
  • Merchant onboarding and billing
  • Preparation for Shopify’s app review
  • Maintenance after launch

You get: A public app built for many merchants. See the section for agencies and founders below.

Our approach

Use the right tool for the job.

A custom build isn’t always the answer. We look at what already exists before we recommend one.
First choice

Use what Shopify already offers

Native features, Shopify Flow or an App Store app, when they do the job.

  • No custom build assumed
  • Lower cost and upkeep
  • Your team stays on familiar tools
When there’s a gap

Build the missing piece

A focused custom app, integration or automation, scoped to the gap.

  • Access and feasibility checked first
  • Maintenance agreed up front
  • Documented for handover
Always

Keep people in control

Clear rules for what runs on its own and what needs approval.

  • Prices, refunds and customer messages need sign-off unless agreed
  • Checks for missing data and failures
  • A simple way to pause or roll back
Example projects

See what a Shopify app project could look like

Three common starting points. Each one shows what goes in, what happens, what comes out and who decides.
Supplier sync

A supplier stock and cost feed

Starts with
A supplier file or API with stock and cost data
What the app does
Matches supplier items to your products and updates inventory on a schedule
Output
Updated stock levels and a list of unmatched items
Human review
Your team decides what to do with unmatched or out-of-range items
ERP link

Orders sent to your ERP

Starts with
New paid Shopify orders
What the app does
Sends order data to the ERP and writes back status and tracking details
Output
Orders in both systems, with failed sends flagged
Human review
A named person resolves flagged orders
Reconciliation

A payout and order reconciliation view

Starts with
Order, refund and payout data
What the app does
Groups and matches records and highlights differences
Output
A report your finance team can check and export
Human review
Finance confirms the differences before any change is made

Illustrative examples, not client projects. Feasibility, data availability and effort are confirmed for each store.

Shopify API integration

Connect Shopify to the systems you already run

We work with the Shopify APIs and with the other system’s API, file exports or connector, depending on what each side supports.

Suppliers & inventory

Stock, cost and product feeds, purchase workflows and multi-location inventory.

ERP & accounting

Orders, customers, invoices and payouts between Shopify and your back-office systems.

CRM & marketing

Customer, order and segment data sent to the tools your sales and marketing teams use.

Shipping & fulfillment

Labels, tracking and fulfillment status with carriers, 3PLs and warehouse systems.

What we confirm before we quote: which systems are involved, what data moves and in which direction, how often, and what API access you have. Not every system offers the same options, and some Shopify capabilities depend on your plan.

Shopify automation

Rules first. AI where it helps.

Automation should remove repeated work without taking decisions away from your team.

Rules-based automation

Defined instructions, such as “when stock falls below this level, create a task for purchasing.” Predictable, easy to test and easy to explain to your team.

AI-assisted workflows

AI can help draft product content, classify requests or summarize reports. Output goes to a person for review before anything customer-facing, price-related or financial changes.

How we use AI in development. Our developers may use AI-assisted coding tools. Our developers remain responsible for architecture, code review, testing and delivery, and nothing ships without that review.

For agencies and app founders

Bring your Shopify app idea to life.

Whether you’re building for a client or for your own product, we help with the technical side so you can focus on the business.

Agencies: client projects

  • Custom apps and integrations for your clients’ stores
  • White-label development under your brand
  • Specs reviewed with your team before work starts
  • Scope, ownership and hosting agreed per client

Good for: agencies that need extra development capacity without a full-time hire.

Founders: public apps

  • Product planning and technical architecture
  • Merchant onboarding and billing
  • Preparation and submission for Shopify’s app review
  • Maintenance and updates after launch

Good for: founders building one app for many merchants.

About App Store approval. Shopify reviews public apps and makes the final decision, and the same review requirements apply to apps with limited visibility. We build to Shopify’s published requirements, but we can’t guarantee approval or timing.

Hire Shopify developers

Hire a Shopify developer for a project, or for ongoing work

Start with a defined project, or work with a dedicated Shopify developer who learns your store and your team.
Defined project

A scoped build

A fixed brief, such as one app or one integration, with agreed deliverables.

  • Written scope and acceptance criteria
  • Testing and handover included
  • Good when the specs are clear
Dedicated support

A dedicated Shopify developer

Hire dedicated Shopify developers for continuing work on your store or your client stores.

  • One developer who knows your setup
  • A backlog you prioritize
  • Good for steady improvement work
After launch

Ongoing maintenance

Fixes, updates and small changes once a project is live.

  • Monitoring and bug fixes
  • Updates for Shopify changes
  • Retainer arrangements

How engagement works. The model, team size and any commitments are agreed in your proposal after we review the work.

Ownership & support

You choose who owns and hosts the app

There’s no single arrangement. We agree the one that suits your budget and plans, and it affects the cost.
Option 1

Full ownership transfer

We hand over the code and the rights. You, or your team, host and run the app.

  • Code and rights transferred to you
  • You host on your own hosting
  • Cost reflects the transfer
Option 2

We host the finished app

We keep the code, host the finished app and keep it running for you.

  • You use the app, we run it
  • A hosting fee after the project is complete
  • Cost structure differs from a transfer
For agencies

White-label development

We build behind your brand for your clients, on the ownership terms you need.

  • Your brand stays in front of your client
  • Ownership and hosting set per project
  • Partnership terms agreed up front

Support after launch

Projects usually include 30 days of free support, and we may extend that on larger projects. After that, an optional retainer covers fixes, updates and changes. The exact terms are in your proposal.

What you receive

What your project should include

Your proposal confirms exactly what’s included in each project.
01

Written scope

The problem, users, data, integrations and acceptance criteria, agreed before work starts.

02

The app or integration

Built to the agreed scope and installed on your store, or submitted for review if it’s a public app.

03

Testing and handover

Normal and failure-case checks, documentation and a walkthrough with your team.

04

Operating arrangements

Ownership, hosting, subscriptions and support, agreed explicitly.

How we measure it. We agree a baseline and measures tied to the problem, such as manual steps, processing time, error rates and reliability. Sales and conversion also depend on other factors.

How costs work. Cost depends on scope, integrations, ownership and support. We quote after reviewing your specifications, and clearer specs give a more accurate estimate.

How it works

From idea to a working app

The first conversation is about fit. Technical feasibility is confirmed before we quote.
1

Share the idea

The problem, the systems involved, your Shopify plan and the result you want.

Review
2

Confirm the approach

Existing features, an App Store app or a custom build. Scope, access and ownership.

Scope
3

Build and test

Build the agreed app or integration and test normal and failure cases.

Build
4

Launch and support

Document, hand over and start the agreed support.

Launch
Storefront work

Looking for layout and storefront changes?

App development covers functionality, data and automation. Page layouts, product pages and the look of your store are handled separately through our Shopify design services.

Our wider ecommerce work

Results we’ve delivered for online businesses

Results from our ecommerce and marketing work for real businesses. These are not app development results.
View all case studies
Bike Finance Australia
Ecommerce SEOAI Search (AIO)Local SEO

Bike Finance Australia

SEO, AI search and local SEO for an online bike and e-bike finance platform. Over 34 months: 97% of keywords on Google’s page one and 1,259 conversions a month.

Read the case study
Adventure & Eco-Tourism New Zealand
Ecommerce SEOContent Marketing

Adventure & Eco-Tourism New Zealand

SEO for a New Zealand adventure and eco-tourism business. In six months: organic traffic up 121% and conversions more than doubled to 1,931 a month.

Read the case study
Workplace Vending Australia
Local SEOEcommerce SEOAI Search (AIO)

Workplace Vending Australia

SEO, AI search and local SEO for a national workplace vending provider. In 20 months: 50 keywords on Google’s page one and 79% presence in Google’s AI Overviews.

Read the case study
Client reviews

What clients say about working with our team

Real reviews from real clients.
Read all reviews

Web commerce pros created a really lovely design for our website. They also changed the layout for our images and updated/resized images so that the site is overall much more attractive. We have been receiving a lot of positive feedback from customers on the ease of use and the overall look of our site. In addition, we are very grateful to Roy for coming up with a creative solution for allowing customers to easily create their own quotes, which has been very helpful to both our operations and our customers.

Anna Flanguagelizard.com
Design & custom features

The team at Web Ecommerce Pros did an excellent job with our site migration. Roy and his team took great care in migrating the data from our 17yo Yahoo store to ensure a seamless transition at the time of launch. They showed excellent communication when site changes needed to be made prior to launch and also helped us choose the appropriate apps to attain the functionality we were looking for with our site.

ebuilderdirect.comebuilderdirect.com
Yahoo to Shopify migration

I continue to enjoy working with this company. They created the most beautiful website ever! They are proactive and helped get my product off the ground quickly. Their knowledge in navigating the backend of Shopify as well as social media has been a huge help. I trust them implicitly and bonus they are fun to collaborate with.

Melissa
Shopify store
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FAQ

Before you start a Shopify app project

Plain answers about apps, integrations, ownership and cost.

App development

A custom app is built for one store, or for the stores of one Plus organization. “Private app” was the older name for the same idea. Shopify now creates new custom apps through the Dev Dashboard, and existing legacy custom apps keep working.

Often an existing app or a native Shopify feature does the job, and we say so. We check those first and recommend a custom build only when there’s a clear gap.

Yes. We help with planning, onboarding, billing, submission and maintenance. Shopify reviews every public app and decides on approval, so we can’t guarantee it or promise a date.

Yes, we offer white-label development for agencies. Ownership, hosting and communication with your client are agreed for each project.

Let’s talk

Which problem should your Shopify app solve?

Tell us what your business does today, which systems are involved and what you’d like to happen instead. We’ll discuss feasibility and a suitable scope. Please say whether you are a store owner, an agency or an app founder.

Please don’t include passwords, API keys or customer information.

Book a Call

Or call 888-711-2347

Discuss your app

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