Shopify Development Agency

Shopify Stores Built to Convert — Wired to Keep Customers Coming Back

We design and build custom Shopify stores that load fast and sell — from theme development to app integrations and migrations. Want customers to come back too? Add Klaviyo retention marketing to any build.

10 yrsECOMMERCE EXPERIENCE
200+SHOPIFY STORES BUILT
2 servicesDEV + RETENTION, ONE TEAM
yourstore.com
+ Retention Flows
98SPEED SCORE
Custom Themes · not templates App & API integrations Migrations from WooCommerce, Wix, Magento Klaviyo retention add-on
Why Dextagon

Most Shopify builds stop at launch.
We build for what happens after.

A store is only half the job. The other half is what turns a visitor into a customer, and a customer into a repeat one.

The Typical Build

What most agencies ship

  • A theme installed with defaults barely touched, slow to load on mobile.
  • Apps bolted on until the store feels stitched together, not designed.
  • Zero thought given to what happens after checkout — no flows, no follow-up.
The Dextagon Build

What we ship instead

  • A custom-built theme, tuned for speed and designed around your product.
  • Apps and APIs integrated cleanly, tested, and documented.
  • Retention marketing available from day one, so post-purchase isn't an afterthought.
Primary Service

Shopify Development

Ten years building on the platform, distilled into three things we do exceptionally well.

Custom Theme Development

Built from scratch around your product and brand — not a modified template. Fast, responsive, and easy for your team to manage.

App & API Integrations

Subscriptions, reviews, loyalty, ERP or 3PL connections — integrated cleanly so your stack works together instead of fighting itself.

Migrations & Speed Optimization

Moving from WooCommerce, Wix, or Magento — or just tired of a slow store. We migrate cleanly and optimize for Core Web Vitals.

Add-on Service

Retention Marketing

Once your store is live, we can wire in Klaviyo email & SMS flows so first-time buyers become repeat ones — welcome, abandonment, post-purchase, and win-back.

Welcome Series Cart Abandonment Post-Purchase Win-back
How We Work

From audit to launch

A straightforward three-step process, whether you're starting fresh or migrating an existing store.

Discovery & Audit

We review your current store (or brief, if starting fresh), your product catalog, and your goals — then scope exactly what needs to be built.

Duration: 15–30 minutes · Free

Design & Build

Theme, apps, and integrations are built and tested in a staging environment before anything touches your live store.

Duration: 2–6 weeks by scope

Launch & Optional Retention Setup

We launch, hand over documentation, and — if you've added retention marketing — wire in your core Klaviyo flows at the same time.

Ongoing support available
Engagement Models

Transparent pricing

Every build is scoped after your audit — these ranges reflect typical project complexity.

New Store

Store Build

$3,000 – $8,000

One-time project fee, scoped after your audit

  • Custom theme development, built for your catalog
  • Core app integrations included
  • Speed & mobile optimization
  • 30 days of post-launch support
Start a Build
+ Retention Marketing Add-on Klaviyo email & SMS flows, bundled with any build or added later
from $800
FAQ

Questions we get on every audit call

Both. If your current theme is solid, we can extend and optimize it. If it's holding you back, we'll scope a custom build instead — we'll tell you honestly which one your store actually needs.

It's an add-on, not a bundled default — you can start with just the store build and add Klaviyo flows later, or bring them in from day one so post-purchase is covered at launch.

Most custom builds and migrations take 2–6 weeks depending on catalog size and app complexity — you'll get a firm timeline after the audit, not a vague estimate.

Yes — subscriptions, reviews, loyalty programs, ERP/3PL connections, and custom API work are all part of the development service, scoped based on what your store already runs on.

Ready to Build a Store That Converts?

Book a free audit. We'll look at what you have (or what you're planning) and tell you exactly what it needs — no commitment, no pitch deck.

Get Your Free Store Audit