Custom App Development

When off-the-shelf apps don't cut it.

5.0 (1 verified reviews)

From £12,000 starting price

29 store owners viewing this service

Only 1 project slots remaining

Booked 6 times in the last 7 days

Timeline (Choose your delivery speed)

Simple Integration £6,000

2-3 weeks • Private apps, simple automations, basic API integrations.

Save 50%

Standard App £12,000

6-8 weeks • Full-featured private or unlisted apps with admin UI.

Complex/Public App £24,000

12+ weeks • Public app store submissions, complex logic, multiple integrations.

Sometimes the app store doesn't have what you need. Sometimes you need something that works exactly the way YOUR business works, not the way some product manager in San Francisco thought it should work. I build custom Shopify apps using the latest APIs, with clean architecture that won't fall apart when Shopify releases updates. From simple private apps to complex integrations. **Contains:** Node.js, React, GraphQL, and an unreasonable amount of testing.

Ingredients / What's Included

Node.js/Remix: Modern

React/Polaris: Native feel

GraphQL API: 100%

Automated Testing: Comprehensive

Technical Debt: 0%

Features

Full Shopify API expertise (Admin, Storefront, Functions)
Shopify App Bridge integration
Polaris design system implementation
Webhook handling and queue management
OAuth and session management
Database design and optimisation
Comprehensive error handling
Full documentation

Deliverables

Production-ready Shopify app
Source code with full ownership
Technical documentation
Deployment guide
90-day support period
Optional: Hosting setup assistance

FAQ

Do I own the code?

Yes, 100%. I build it, you own it. Full source code, no strings attached.

What about hosting?

I can deploy to your infrastructure or recommend cost-effective hosting solutions. Most apps run for under £40/month.

Can you maintain it after launch?

Absolutely. See my Ongoing Support package, or we can arrange project-based maintenance as needed.

Shipping & Returns

Shipping: Free delivery directly to your Git repository. No physical products will arrive at your door (unless you count the satisfaction of great code).

Returns: 30-day satisfaction guarantee. If you're not happy with the work within 30 days of delivery, I'll fix it free of charge. No questions asked, no judgments made.

Carbon Footprint: This service is carbon neutral. Code is optimised for performance, which means less server energy. Plus I plant trees or something. Probably.

Customer Reviews (1)

"We needed a custom wholesale pricing app that none of the existing solutions could handle. James built exactly what we needed. It's been running flawlessly for 18 months."

Michael Foster

B2B Wholesale Plus

Verified Purchase