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Shopify App Development

Custom Shopify apps built for selling across borders

We design, build, and publish Shopify apps for Polish brands operating in multiple international markets. When cross-border complexity outgrows off-the-shelf apps, we build exactly what your multi-market operation needs.

Custom quote

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Problem

No existing app handles the complexity of selling internationally

Cross-border e-commerce breaks generic apps fast. You need country-specific pricing rules, multi-currency duties calculations, market-specific fulfillment routing, and integrations with European logistics and ERP systems that the App Store simply does not cover. So you stitch together workarounds, pay for overlapping subscriptions, and still do the hard parts by hand.

What you gain
  • An app built for your exact cross-border workflow, with no workarounds
  • Clean integration with Shopify Markets, your logistics network, and your ERP
  • Faster, more reliable international operations without manual handling
  • A maintainable app we support and grow with you as you enter new markets
What's included

What's included

01Custom Shopify app design and development, public or private
02Shopify Markets extensions and multi-currency, multi-region logic
03Embedded admin apps built with Polaris and App Bridge
04Integrations with your ERP, 3PL, and European logistics providers
05Checkout UI extensions and Shopify Functions for market-specific rules
06App Store submission and listing support
07Ongoing maintenance, monitoring, and updates
How it works

A clear path from start to finish

01

Scope and design

We map the cross-border problem, the Shopify resources involved, and the data flow across your target markets, then agree on a clear spec, timeline, and fixed price.

02

Build and integrate

We build the app against the Shopify API, connect your international logistics and ERP integrations, and test it on a real multi-market store while you track progress along the way.

03

Launch and support

We deploy the app, handle the App Store submission where needed, then monitor, maintain, and develop it further as you expand into new markets.

Who it's for

Is this the right fit for you?

Polish brands selling in multiple countries who need automation the App Store does not offer
Merchants integrating Shopify with a European ERP, 3PL, or customs tool
Stores replacing a stack of overlapping paid apps that break under international complexity
Founders with a Shopify app idea for cross-border merchants they want to ship to the App Store

Have a cross-border Shopify problem that no app solves? Let's build the one that does.

Questions

Frequently asked questions

Can you build apps that handle Shopify Markets and multi-currency logic?

Yes. We build apps and extensions that work natively with Shopify Markets, handling country-specific pricing, duties, tax rules, and fulfillment routing across all your target markets.

How much does a custom Shopify app cost?

It depends heavily on scope. A simple admin extension for a single market is a very different project from a multi-market ERP integration. Most projects fall somewhere between 10 000 and 50 000+ zł, and we give you a fixed price after a short discovery call.

Can you integrate Shopify with European logistics providers and ERPs?

Yes. We connect Shopify with European 3PLs, ERPs, customs brokers, and fulfillment systems so data flows automatically across all your markets instead of being re-entered by hand.

Will you maintain the app as Shopify evolves?

Yes. The Shopify platform evolves constantly, and international compliance requirements change too. We offer ongoing maintenance, monitoring, and updates to keep your app running smoothly and compliant in every market.