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paul@athlosdev.com
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Shopify App Development Company

Custom Shopify
App Development

I build high-performance Shopify apps that extend your store's functionality — including the real-time Shopify sync I built for Elinart's B2B ordering platform. From checkout extensions to full admin dashboards — production-grade code, pixel-perfect Polaris UI. I also build apps for agencies through our white-label development program. Curious which apps top merchants rely on? Check out our guide to the best Shopify apps for clothing stores.

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Your Custom App
by AthlosDev
4.9 (128)
Automated workflows
Real-time analytics
One-click install
Free to installWorks with latest APIs
What We Build

App Types We Specialize In

Custom Storefront Apps

Headless commerce experiences powered by Hydrogen and the Storefront API.

Checkout Extensions

Custom UI extensions and Shopify Functions for checkout logic and payment flows.

Admin Dashboard Apps

Embedded admin apps with Polaris UI for store management and data visualization.

Marketing Automation

Apps that automate email campaigns, retargeting, and customer segmentation.

Inventory Management

Multi-location inventory sync, warehouse management, and stock forecasting tools.

Customer Portal Apps

Self-service portals for order tracking, subscriptions, and account management.

Tech Stack

Built With Modern Shopify APIs

Every app we build uses the latest Shopify platform capabilities — Remix app framework, GraphQL Admin API, App Bridge 4, and Polaris design system for a native embedded experience.

Node.jsReactGraphQLShopify CLIPolarisApp Bridge
Our Process

How We Ship Shopify Apps

A structured, transparent development process. You see exactly where your app stands at every stage — from initial scoping through App Store launch.

Planning3
Scope requirements & user stories
Discovery
Design data models & API schema
Architecture
Shopify API access & scopes
Setup
Development3
Build App Bridge embedded UI
Frontend
Implement GraphQL mutations
Backend
Webhook event handlers
Integration
Testing3
OAuth flow & session tests
Auth
Rate limit & error handling
Resilience
Cross-browser QA on Polaris UI
QA
Launch3
App Store listing & screenshots
Submission
Performance monitoring setup
Ops
Merchant onboarding guide
Docs
Results

Apps That Perform

App Analytics Dashboard
Live
0%
Custom Built
0+
Years Shopify Dev
0.0
App Framework
0%
Production Grade
App Installs Over Time2025
JanMarMayJulSepNovDec

Ready to build your
Shopify app?

From concept to App Store listing. Tell us what you need and we'll scope it out — free consultation, no obligations.

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Explore More

Related Shopify Services

Shopify B2B & Wholesale Solutions

Custom wholesale portals, buyer-specific pricing, and enterprise integrations on Shopify Plus.

Shopify SEO & Organic Growth

Technical SEO audits, keyword strategy, and on-page optimization to drive organic traffic.

Shopify Theme Development

Custom Shopify 2.0 themes with dynamic sections, optimized Liquid templates, and sub-2s load times.

See all development services →
FAQ

Shopify App Development FAQ