Turn your ideas or passion into reality — with By Design UK

Custom Shopify App — £2,999 – £14,997

Shopify Services

Custom Shopify App

Private apps and custom functionality your store can’t get from the App Store.

£2,999 – £14,997Fixed price
3–8 weeksTimeline
100% yoursCode & accounts
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Who this is for

Stores that need something specific — custom pricing logic, a supplier integration, a configurator, an internal tool — without paying for five apps that almost do it.

Why this price is worth it

  • Built exactly to your requirement instead of forcing a workflow onto a generic app
  • Replaces recurring app subscriptions with something you own
  • Runs in your own Shopify Partner / Cloud account — secure and yours
  • Senior engineers, fixed price, full source code

Cheaper quotes usually strip out design, copy, SEO or testing and add them back as extras — or leave you with something you can’t build on. Bigger agencies charge for account managers and overhead. This price is the work, done properly, once.

Everything included

  • Custom app or Shopify Function
  • Third-party / supplier integrations
  • Admin UI where needed
  • Testing on a development store
  • Deployed in your accounts
  • Documentation
  • Training
  • 30 days’ support

How it works

  1. Discovery workshop — users, workflows, integrations and the commercial model.
  2. Fixed-price scope — features, screens, data model and milestones written down.
  3. Design & architecture — clickable prototype and technical design signed off.
  4. Build in sprints — working software every two weeks, you test as we go.
  5. Launch & handover — your cloud, your GitHub, documentation, training, support plan.

Compare Shopify Services

Package Price
Platform Migration to Shopify £999 – £3,499 Find out more
Custom Shopify App £2,999 – £14,997 This page

Questions people ask

Public or private?

Private by default; public App Store apps quoted separately.

Ongoing costs?

Only your hosting for the app (usually a few pounds a month).

Own the code?

Yes.

Why choose BDUK over a cheaper developer?

Because the price includes design, engineering, SEO, testing and handover done by one senior UK team at a fixed price — cheaper quotes usually leave out half of that and add it back as extras, or leave you with something you can’t build on.

Is the price really fixed?

Yes. The proposal lists every deliverable; that is the price. Anything outside it is quoted before we do it, never slipped in.

Tell us about your project — fixed price and timeline within 24 hours.

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Project Enquiry

Tell us what you need — we'll come back with a quote within 24 hours.


We aim to respond within 24 hours. For urgent enquiries email us directly at info@bydesignuk.co.uk

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