SHOPIFY-ONLY STUDIO · EST. 2011

Shopify, only.

14 years on Shopify. 200+ stores shipped. 22 apps shipped on the Shopify App Store. We don't do WordPress. We don't do Magento. We migrate to Shopify and build on Shopify — that's all we do.

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200+
Stores shipped since 2011
14yrs
Building only on Shopify
22
Apps on the Shopify App Store
12K+
Active app installs
2 slots available for Q3 2026

TRUSTED BY 200+ BRANDS

Fusion FixingsStay HighSabiiPLUM AUKonnoWe Got You Covered
9 Source platforms we migrate from
3-6 wks Typical migration timeline
0% SEO loss on migrations done right
100% Senior engineers only

Six Shopify services. One studio. No middlemen.

Senior engineers only. Fixed scope. Predictable timeline.

Shopify Migrations

Move to Shopify without losing SEO, customers, or sleep.

  • Full data migration
  • Custom theme port
  • 301 redirects
  • 30-day support
From $5,000 3-6 weeks
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Shopify Plus

B2B, checkout extensibility, multi-store — built right.

  • Plus setup
  • B2B portals
  • Custom checkout
  • Flow automation
From $50,000 8-16 weeks
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Audit & Optimize

Find what's costing you conversions. Fix it.

  • Lighthouse audit
  • UX review
  • Heatmap analysis
  • Fix sprint
From $2,500 2-4 weeks
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Theme & Custom Dev

Fast themes that don't break when an app updates.

  • Custom theme
  • App integrations
  • Performance budget
  • Code review
From $10,000 4-8 weeks
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Klaviyo & Email

Flows that recover revenue and don't get marked spam.

  • Account setup
  • Core flows
  • Segmentation
  • Campaign calendar
From $3,000 2-4 weeks
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Speed & SEO

Faster Lighthouse scores. Better Search Console.

  • Core Web Vitals
  • Technical SEO
  • Schema markup
  • Quarterly review
From $2,500 2-3 weeks
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Fusion Fixings

Fusion Fixings

Quantity-break pricing across 20,000+ SKUs with a live Profit4 ERP sync — on Shopify Advanced.

One of the UK's largest fixings retailers. We engineered true quantity-break pricing across 20,000+ SKUs and connected the store to their Profit4 ERP — without the cost or complexity of a Shopify Plus build.

20,000+
SKUs with live pricing
Profit4
ERP sync live
Advanced
Shopify plan tier
Read the case study

We're the rare Shopify team that ships apps.

22 apps live on the Shopify App Store. That means we know Shopify's APIs, edge cases, and gotchas from the inside — because we live in them every day.

See our apps
22
Apps shipped
12K+
Active installs
14 yrs
Shipping apps since 2011
Live
On Shopify App Store

Why founders pick us — in their words.

Carti shipped our Plus build in 11 weeks. Three other agencies quoted 6 months.
They're the only agency we've ever worked with that didn't try to upsell us into things we didn't need.
We needed quantity-break pricing on 20,000 SKUs and a live ERP feed — and we needed it on Shopify, not Magento. Carti made it work on Advanced. We didn't need Plus.

Ready to ship Shopify work faster?

Book free audit

No pitch. A senior Carti dev reviews your store live and sends a 1-page report.