SHOPIFY APPS · INTEGRATIONS · ZAGO

Custom Shopify apps and integrations

Connect Shopify to your ERP, shipping and the tools your team already uses, or build the feature the app store does not have. We start with the workflow: which systems exchange data, who owns each record and what should happen when a sync fails.

What we build

Shopify apps

Shopify API work, full-stack app development and UX design for app interfaces.

Product and order APIs

Product and order API integrations between Shopify and other stores or tools.

ERP integration

Connections with Fortnox, Visma and Microsoft Dynamics 365 Business Central, with the records and update direction named in the scope.

Shipping integration

nShift setup with carriers such as PostNord, Instabox, Bring and DHL, delivery options in checkout, tracking and returns.

How we scope an integration

We define which system owns each record and how products, stock, orders and fulfilment updates move between systems. Test cases cover normal orders and the exceptions, such as partial fulfilments or failed syncs.

Access, third-party responsibilities, monitoring and handover are part of the scope, so everyone knows who looks after what once it is live. Third-party subscriptions and ongoing maintenance are agreed separately.

Ready-made apps from ZAGO

Illustrative age-confirmation popup on a tablet in a warm grey studio.

Age Verifications Popup

A self-declared age gate for the whole store, with versions for Shopify, WooCommerce and Magento. Gating selected products or collections is a separate customization.

View Age Verifications
Illustrative Shopify cart with a terms acceptance checkbox on a laptop.

Terms and Conditions Checkboxes

Required or optional confirmation checkboxes in the Shopify cart, set up and tested by ZAGO.

View Checkboxes
Illustrative product page on a phone with a Log in to view price button.

Login to View Price

Hide prices on chosen products or collections until a customer logs in, or show them only to tagged customers such as wholesalers.

View Login to View Price

Ways to start

Illustrative store audit reviewing performance, usability, design and the store journey.

Shopify Basic Audit

A written review of your storefront and sales funnel with findings, practical recommendations and suggested priorities.

View the audit
Illustrative product layout task marked completed on a laptop screen.

Shopify Single Task

One small, clearly defined change to your store that fits within one hour of developer time.

View Single Task
Illustrative store performance review showing images, scripts and loading on a laptop.

Speed Optimization

We find what slows your store down and improve theme code, images and app setup, with before-and-after measurements on agreed pages.

View Speed Optimization

AI assistants and agentic commerce

AI shopping assistants can only recommend a product they understand, so product data comes first: clear attributes and consistent facts on every page.

When an AI agent is allowed to act, for example to change an order, it needs clear rules and a working connection to the systems behind the store. The agent checks whether a change is allowed, shows it to the customer, waits for confirmation and routes anything blocked to a person.

Existing app or custom build?

Often an existing feature or app is the better start, and setup and testing are enough. For selected partner apps we offer free setup. App subscriptions and third-party fees are separate.

Questions about apps and integrations

Often an existing feature or app is the better start. We assess Shopify and your current tools before recommending custom development.

We work with Fortnox, Visma and Microsoft Dynamics 365 Business Central. Discovery confirms the connector, the records it supports and the direction of each update.

Yes. On Plus we turn checkout requirements into a proposed solution using supported extensions and apps, and check plan requirements and app compatibility first. See our Shopify Plus page.

We agree that in the scope, together with documentation and a handover. Ongoing support can be added as a separately agreed plan.

We estimate after reviewing the systems, data and workflows involved. Third-party subscriptions and ongoing maintenance are agreed separately from development.

Related Shopify services

Integrations often sit inside a bigger project: a B2B launch, a migration or a shipping setup. See also Shopify development for international commerce and Shopify international expansion.

Tell us which systems need to talk to Shopify

Share your store URL, the systems involved and what your store needs to do that it cannot do today.

We will review the workflow and suggest the next step.