OUR SERVICES

Shopify Development Agency - Custom Themes & Apps

We build Shopify stores that stand out from the template crowd. Kultrix develops custom Liquid themes, Shopify apps, and headless storefronts on Hydrogen that deliver brand-unique shopping experiences without sacrificing Shopify's battle-tested commerce engine.

Next step: get your project scoped

Tell us what you are building - what exists today, what it has to do and when it has to be live. We come back with the questions we need answered and a scoped estimate instead of a range.

Describe your project

EXPERTISE

Our Tech Stack

Shopify
Liquid
Hydrogen
React
TypeScript
Shopify API

OUR APPROACH

Flexible Engagement Models

Choose the cooperation format that best fits your business goals and development velocity.

Startups

MVP Development

Fast launch to test your idea and gather user feedback with minimal investment.

What's included

  • Core feature development
  • Basic UI/UX design
  • Stable performance

Timeline Typically 9-16 weeks

Businesses

Full App Build

Complete cycle from initial strategy and design to final launch.

What's included

  • Custom architecture & design
  • Seamless team integration
  • Production-ready release

Timeline Typically 20-40 weeks

Enterprises

Team Extension

Scale your team with expert developers to accelerate development.

What's included

  • Senior-level developers
  • Seamless team integration
  • Flexible management

Timeline Flexible / Long-term

OUR PROCESS

How We Work

We specialize in creating user-centered & innovative solutions. Delivering seamless digital experiences.

Discovery
ResearchFlow MapUser Interview
Solution
ArchitectureWireframesPrototyping
Development
Sprint CyclesCode ReviewQA Testing
Launch
DeploymentMonitoringHandoff

EXPERT INSIGHTS

Hydrogen (Headless) vs Liquid Storefront

Hydrogen unlocks full React-powered UX and performance while keeping Shopify as the commerce backbone.

Go With Hydrogen (Headless)

  • React component model

    Build complex, interactive storefronts with the full React ecosystem.

  • Superior performance

    Edge-rendered pages with minimal JS payload to the browser.

  • Custom UX patterns

    Implement any interaction pattern not possible in Liquid themes.

  • Storefront API power

    Access all Shopify commerce data via GraphQL with full control.

Go With Liquid Theme

  • Fastest launch

    Theme store to live store in hours with minimal dev work.

  • App ecosystem compatibility

    Most Shopify apps inject into Liquid themes seamlessly.

  • Lower hosting cost

    Shopify hosts Liquid themes - no separate server needed.

  • Editor previews

    Merchants see live theme editor changes instantly.

EXPERT GUIDANCE

Hydrogen vs Liquid Theme

Hydrogen (Headless)

Performance

Edge-cached, minimal JS - fast globally.

UX Flexibility

Unlimited - full React component control.

App Compatibility

Requires headless-compatible apps or custom integration.

Hosting

Separate infra (Oxygen or Vercel) required.

Development Cost

Higher - bespoke React development.

Best For

High-growth DTC brands with complex UX requirements.

Liquid Theme

Performance

Good with CDN; limited by Shopify theme engine.

UX Flexibility

Constrained by Liquid template and section schema.

App Compatibility

All Shopify apps work out of the box.

Hosting

Hosted entirely within Shopify - zero ops.

Development Cost

Lower - existing themes + customisations.

Best For

SMB merchants launching fast with standard features.

DELIVERABLES

What You Get

Custom Liquid Theme

Custom Liquid Theme

Bespoke Shopify theme built from scratch with Dawn as a base, fully matching your brand.

Hydrogen Storefront

Hydrogen Storefront

Headless Shopify storefront built on Hydrogen/Remix for maximum performance and flexibility.

Custom Shopify App

Custom Shopify App

Private or public Shopify app extending store functionality beyond native capabilities.

Checkout Extensions

Checkout Extensions

Shopify checkout UI extensions for upsells, custom fields, and loyalty integrations.

Theme Performance

Theme Performance

Lazy loading, critical CSS inlining, and image optimization to hit sub-2s LCP.

App Integrations

App Integrations

Klaviyo, Recharge, LoyaltyLion, and other key third-party app configurations.

INDUSTRIES

Tailored Solutions for Your Specific Industry

We build powerful digital experiences across various sectors, ensuring your product meets unique market demands.

(01)

Fintech

Data-driven commerce solutions that improve journeys, boost sales, and optimize operations.

(02)

Retail

Data-driven commerce solutions that improve journeys, increase sales, and optimize operations.

(03)

Healthcare

Reliable medical platforms that protect patient data, simplify workflows, and support clinical accuracy.

(04)

B2B SaaS

Product-driven platforms that enhance workflows, automate processes, and scale with your business.

CASE STUDIES

Our Recent Work

View All

START YOUR PROJECT

Ready to build with expert Shopify Development team?

Expert developers ready to deliver high-quality digital products.

FAQ

Frequently Asked Questions

Custom development is worth it when your brand needs a unique storefront that off-the-shelf themes cannot achieve, when you need business logic that no app provides, or when performance is a priority. If a theme from the Shopify Theme Store meets your needs, that is often the faster path - Kultrix will tell you honestly.

Hydrogen is Shopify's official React framework for headless storefronts, built on Remix. It gives you complete design freedom, superior Core Web Vitals performance, and full control over the customer experience. Use it when your brand requirements or performance targets exceed what Liquid themes can deliver.

Yes. We build private apps for internal automation (sync inventory, custom discount logic, bulk operations) and public apps listed on the Shopify App Store. We use Shopify's App Bridge, REST and GraphQL Admin APIs, and the embedded app pattern.

Yes, within Shopify's allowed extension points. Shopify Plus merchants have access to checkout.liquid for deeper customization. All merchants can use Checkout UI Extensions for adding custom content, upsell offers, and custom fields post-cart.

We audit theme JavaScript (removing unused libraries, deferring non-critical scripts), lazy-load below-the-fold images, inline critical CSS, use Shopify's image CDN with modern formats, and eliminate render-blocking third-party scripts. Performance improvements directly correlate with conversion rate gains.

Yes. Kultrix handles full platform migrations - products, customer records, order history, and blog content. We use Shopify's import tools combined with custom migration scripts for large catalogs, and configure 301 redirects to preserve your SEO rankings.

Yes. Common integrations include ERP systems (NetSuite, SAP), warehouse management systems, POS (Shopify POS, Square), email platforms (Klaviyo), subscription apps (Recharge), and loyalty programs (Yotpo, LoyaltyLion). We build these via webhooks, APIs, and custom apps.

Shopify Plus unlocks checkout.liquid customization, Shopify Scripts for custom discounts, advanced B2B features, Shopify Flow for automation, and increased API rate limits. Kultrix implements these features to maximize the value of your Plus subscription.

Yes. Shopify Markets handles multi-currency pricing, local payment methods, and geo-based domain routing. We configure Markets with localized content, currency rounding rules, and duty/tax calculations for international checkout compliance.

We configure canonical URLs for collection and product pagination, optimize product and collection page meta templates, implement Product structured data, create an XML sitemap, and set up 301 redirects for any URL changes during theme launches.

Yes. Complex product configurators - 3D viewers, multi-step builders, conditional variant logic - are a common Shopify customization. We build these as embedded JavaScript applications within Shopify themes, using the Storefront API for dynamic pricing and cart updates.

A custom Liquid theme takes 4-8 weeks. A Hydrogen headless storefront takes 8-14 weeks. A custom Shopify app takes 4-10 weeks depending on complexity. Kultrix scopes each engagement with milestones and staging previews throughout.