Shopify App Store App Development

Some Shopify problems need a real app layer. We help scope, code, test, and prepare Shopify apps that can support merchant workflows or move toward App Store submission.

This service is delivered by StoreBuilt as part of a London Shopify agency workflow for UK and international ecommerce teams.

Shopify appsApp Store buildsAdmin extensionsCustom workflows

08 / Shopify service London Shopify Agency

Personal care VeeFresh

Commerce experience for a sensitive-category personal care brand

The Suffolk Nest

STIL Lifestyle

Beauty Wellness Interiors Jewellery

Shopify service proof

Shopify App Store App Development sits inside a wider StoreBuilt Shopify delivery system.

LondonShopify agency

11service areas

150+ecommerce projects

5.0client feedback

Related guides

Useful reading around this service scope.

These StoreBuilt guides cover adjacent decisions, implementation detail, and technical considerations that often sit next to this service.

Overview

We build custom Shopify apps and App Store-ready Shopify app products for merchants that need more than theme code.

Custom Shopify app development for merchant workflows, embedded admin experiences, app extensions, and Shopify App Store-ready product ideas.

Shopify app scoping across merchant admin workflows, storefront extensions, and operational logic
Custom app development for private business needs or Shopify App Store-ready product concepts
Testing, app setup, and technical preparation for a cleaner merchant install and support experience

How this connects

Most serious Shopify work is won across more than one service lane.

Shopify App Store App Development can sit alongside strategy, development, CRO, SEO/GEO, retention, integrations, and support so the store improves as one operating system.

01Strategy & Discovery

Roadmap, KPIs, customer journeys, app stack, and store architecture before build.

02Theme Coding

Liquid, sections, templates, storefront customisation, and merchant editing controls.

03Shopify Apps

Custom Shopify apps, admin workflows, app extensions, and App Store-ready builds.

04Integrations

ERP, WMS, CRM, reviews, subscriptions, fulfilment, analytics, and automation layers.

05CRO & Experimentation

PDP proof, landing pages, checkout friction, merchandising, and conversion backlog.

06SEO / GEO

Technical SEO, AI search readiness, collection planning, schema, and migration signals.

07Retention & Growth

Klaviyo, email/SMS capture, subscriptions, loyalty, and repeat-purchase journeys.

08Support & Maintenance

Retainers, audits, bug fixes, campaign support, technical QA, and roadmap delivery.

Deliverables

What the engagement typically includes.

App requirements map

Custom Shopify app build

Admin and storefront extension support

Testing and launch handover

Outcomes

The results this service is designed to create.

A Shopify app layer that solves work the theme should not carry

Cleaner merchant workflows for custom operations or repeatable app products

A stronger technical route toward Shopify App Store submission or private app rollout

Process

How the work moves from audit to launch and iteration.

Audit and scope

We review the current store, commercial goals, pain points, tech stack, and priorities before shaping the roadmap.

Design and build

The UX, content structure, development, and testing move together so the storefront stays coherent as decisions get made.

Launch and improve

After go-live, we stay close to the store through QA, support, optimisation, and whatever the next trading priority requires.

Related services

Pair this scope with adjacent Shopify support when needed.

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