App & Integration Development
Shopify app development and integrations in the UK
Shopify app development for UK brands whose store has to talk to everything else. We build custom apps and integrations that sync your ERP, CRM, inventory and fulfilment, so your team stops copying data by hand.
- Official Shopify Partner
- Senior engineers only
- Fixed-price scopes
- Pricing
- Fixed-price proposal
- Connects
- ERP, CRM, inventory, 3PL, Klaviyo
- Reply
- 1 working day
What's included
What's included
Custom Shopify apps
built for your store and workflows.
ERP integrations
for stock, pricing, orders and invoices.
CRM and marketing sync
including Klaviyo.
Inventory and 3PL connections
so stock levels stay accurate.
Ecommerce API integrations
across WooCommerce, Adobe Commerce and BigCommerce.
Monitoring and alerts
so a failed sync is caught quickly.
Platforms & approach
Custom app or off‑the‑shelf? We tell you straight
If a well-supported app already does the job, we will say so and set it up. We build custom when your process is specific, when apps conflict, or when monthly app fees add up to more than a one-off build.
Every integration is documented and built on supported APIs, so it keeps working as platforms change.
Platforms
- Shopify
- WooCommerce
- Adobe Commerce
- BigCommerce
Who it suitsgrowing and established retailers running ERP, warehouse or B2B processes alongside their store.
Outcomes
What good integration gives you
Stock levels that match across every channel.
Orders that reach your warehouse without manual entry.
Customer data that flows into your CRM and email.
Fewer apps, lower monthly fees, faster pages.
Process
How an integration project works
Discover
We map your systems, data and manual tasks.
Plan and propose
Specification, data mapping and a fixed price.
Design and build
Built and tested against staging data first.
Launch and grow
Go-live, monitoring and support.
Guide price
How pricing works
Typical investment
Fixed price, agreed in your proposal
- Apps and integrations are priced on scope. After a free discovery call you get a written specification and a fixed price. Ongoing support is available on retainers from £750 a month.
FAQ
Frequently asked questions
Usually, yes. Most ERP and inventory systems have an API, and Shopify has a well-documented one. We connect them through a custom app or middleware so stock, prices, orders and customers sync automatically. On your discovery call we check what your system supports.
A public app is listed on the Shopify App Store and used by many stores. A custom app is built for one store or business and is not listed publicly. Custom apps fit your exact workflow and avoid paying for features you do not need.
Start with off-the-shelf if one does the job well. Choose custom when your process is unusual, when several apps clash, or when monthly fees outweigh a one-off build. We will give you an honest recommendation, even if it means less work for us.
We build on supported API versions, document every integration and add monitoring that alerts us when a sync fails. Platforms such as Shopify release API versions on a published schedule, so updates can be planned. A retainer from £750 a month covers this upkeep.
Stop copying data between systems
Tell us which systems you run. A senior engineer replies within one working day.
Senior developer replies within one working day · Official Shopify Partner