Shopify App Development (Custom & Public Apps)

Shopify apps builtaround how you sell.

Shopify app development is building custom software that plugs into a Shopify store. A private app serves one store; a public app is listed on the Shopify App Store for many merchants.

Problem → solution

If this sounds familiar, shopify app development is the fix.

  • The problem

    No existing app does exactly what your store needs.

    Our solution

    A custom app built for your workflow, instead of five plugins bolted together.

  • The problem

    Plugin subscriptions keep stacking up and slowing the store.

    Our solution

    One purpose-built app that replaces several, with a faster storefront.

  • The problem

    You have a product idea for Shopify merchants but no engineering team.

    Our solution

    A public app built to Shopify review standards, from MVP to App Store listing.

What’s included

What’s included.

  • 01

    Discovery and spec

    The problem, users, data and Shopify APIs involved, written into a clear spec.

  • 02

    Admin and embedded UI

    An app inside the Shopify admin using Polaris, so it feels native.

  • 03

    Storefront and checkout extensions

    Theme app extensions and checkout customisations where the platform allows.

  • 04

    APIs, webhooks and data

    GraphQL Admin API, webhooks and a secure back end for your data.

  • 05

    Billing and permissions

    Plans, usage billing and least-privilege access for public apps.

  • 06

    Review and launch

    Testing, security checks and help with the App Store submission process.

How it works

Four steps. No surprises.

  1. 01

    Scope

    Define the problem, users and Shopify surfaces involved.

  2. 02

    Prototype

    A working prototype on a development store.

  3. 03

    Build

    Production back end, UI, extensions and billing.

  4. 04

    Release

    Testing, review submission and monitoring.

Which one?

Private app or public app?

The two routes differ in who uses the app and how it is distributed.

Private (custom) appPublic app
Who uses itOne store or one organisationMany merchants
DistributionInstalled directly on your storeListed on the Shopify App Store
ReviewNo App Store reviewShopify review and requirements apply
BillingNone neededSubscriptions or usage billing through Shopify
Fixes, migration and support

Already have this? We fix it, move it and look after it.

Not starting from scratch? We repair, migrate and maintain existing shopify app development work too.

Request a fix
  • App audit and bug fixes

    Review an existing app and fix errors, timeouts and webhook failures.

  • API upgrades

    Move an app to current Shopify API versions before old ones are retired.

  • Performance and billing fixes

    Speed up slow admin screens and repair subscription billing issues.

  • Hosting and monitoring

    Move the back end to reliable hosting with alerts when something fails.

See all fixes, migrations and care plans →

All projects

Black Jacket Suiting

Online store · blackjacketsuiting.com.au

  • WordPress
  • WooCommerce
  • Ecommerce
  • Redesign

Attention Detailing

Car rental website · attentiondetailing.com.au

  • WordPress
  • Redesign

Shopify app development questions, answered.

Do you build both public and private Shopify apps?

Yes. We build private custom apps for a single store and public apps for the Shopify App Store.

Which technologies do you use?

We typically build with Node.js or Laravel back ends, the Shopify GraphQL APIs, Polaris and Shopify’s app extensions.

Can you add features to an existing app?

Yes. We can audit, extend or rebuild an existing app, including moving it to current Shopify APIs.

Who owns the code?

You do. Source code and infrastructure access are handed over at the end of the project.

Start your project

Got an idea? Let’s make it impossible to ignore.

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