Shopify Apps · Custom Integrations · Growth Engineering

Custom Shopify apps and integrations that engineer growth.

Most agencies outsource development or fake it. RiseUp actually builds it — the custom apps, integrations and automations that off-the-shelf can't do, owned outright by you, engineered to cut platform cost and unlock growth. Production software from a certified Shopify Partner that also ships real software for itself.

  • Shopify Partner · certified & production-grade
  • Code you own — no per-month app tax
  • Built for ourselves too · we eat our own cooking
Trusted by ambitious brands
Sotheby's Bayliss & Harding Micro Scooters Homescapes Pickfords Chummy's Cousins Jeanstore
Owned vs rented

The right build pays for itself.

Off-the-shelf apps stack up: a subscription for reviews, another for feeds, another for email, each billing every month and each boxing you into someone else's roadmap. A custom build works the other way — you own it outright, it fits your stack exactly, and it stops charging you rent the day it ships.

Rented, not ownedOff-the-shelf apps are subscriptions that never end — you pay every month, indefinitely, for a feature you'll never own.
8integration and build types we ship in-house — so the software fits your process exactly, instead of forcing your process to fit an app.
One-off buildOwned code is a one-time cost that keeps paying back — no per-order tax, no lock-in, no waiting on another vendor's queue.

Off-the-shelf is rented. Code you own is an asset — it fits your business exactly and stops charging you rent.

RiseUp app development by the numbers

  • ~£13.5k/yrsaved for one merchant by replacing a single third-party app with a self-hosted build they own
  • 100+brands grown since 2013 — a full-service agency that also ships production software
  • 4.9/5average client rating — senior-led, profit-focused delivery
  • 8integration & build types we ship — apps, integrations, APIs, automation, data and headless
Built for Shopify & Shopify Plus merchants who've outgrown off-the-shelf apps — where owning the code cuts platform cost and unlocks growth a plug-in can't
Why RiseUp

A growth agency that also engineers software — a rare combination.

Most agencies outsource development, or fake it. The handoffs — and the fakery — are where builds die.

No dev-shop handoffs

The people who plan your growth are the people writing the code — one team, one P&L, one accountability. No throwing a spec over the wall to an offshore shop and hoping it comes back right.

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Growth engineering, not tech for tech's sake

Marketing and engineering under one roof, so the software actually serves the numbers — builds that make your marketing perform and cut platform cost, not a shiny MVP that never earns its keep.

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We build for ourselves too

RiseUp runs its own production software — an internal client-operations platform for creative intelligence and reporting. We ship the same standard we sell, so you know it's real, not resold.

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What we do

Custom software, built and owned — one team, one P&L.

From a public Shopify app to a warehouse integration to the data pipeline behind your reporting — eight capabilities, all engineered in-house.

01

Custom Shopify apps (public & private)

Embedded, public App Store or private single-store apps — built to Shopify's standards on OAuth, scopes, billing and webhooks, so they pass review and hold up in production.

02

Third-party integrations (ERP/CRM/3PL/warehouse)

Connect Shopify to the systems you already run — ERP, CRM, 3PL and warehouse — so orders, stock and customers stay in sync without manual re-keying.

03

API & webhook engineering

Custom APIs, webhook handlers and middleware that move data reliably between platforms in real time — with retries, logging and monitoring built in, not bolted on.

04

Marketing automation (Klaviyo & flows)

Klaviyo integrations and automated flows wired to real store events — reviews, purchases, gifting, win-back — so the right message fires without anyone lifting a finger.

05

Data pipelines & reporting

Pipelines that pull, clean and combine data from Shopify, ads and analytics into one trustworthy source — the plumbing behind reporting you can actually act on.

06

Headless & Hydrogen builds

Hydrogen and React front ends on the Storefront API where there's a real case for it — total design control and speed, without breaking the checkout that converts.

07

App cost reduction / re-platforming

Replace a costly third-party app with a self-hosted build you own, or re-platform off an expensive stack — we model the payback before we write a single line of code.

08

Ongoing support & maintenance

Owned code doesn't mean orphaned code — we keep apps current with Shopify's dated API versions and deprecations, and monitor webhooks and uptime, so nothing breaks silently.

The flagship build

We replaced a costly app with a build they own outright.

A merchant was quietly paying a third-party app around £1,125 a month — roughly £13,500 a year — to do one job. We built a self-hosted replacement that does the same job, deployed it, and handed over the code. Same outcome, a fraction of the cost, and no subscription that never ends. That's growth engineering: technology that pays for itself instead of taxing every order.

~£1,125/mo removed~£13,500/yr savedCode they own
Scope a cost-cutting build →
How we build

Scoped, built and shipped — then supported.

From a clear spec to live software you own — and it doesn't stop at launch.

  1. 01 · Scope

    Scope & spec

    We map what you're trying to do, tell you honestly whether custom is the right call, and turn it into a clear spec with a fixed scope, timeline and price.

    AI-assisted
  2. 02 · Architect

    Architect & build

    We design the data model, integrations and infrastructure, then write production-grade code — to Shopify's standards on scopes, billing and webhooks.

    AI-accelerated
  3. 03 · Ship

    Integrate & ship

    We connect it to your stack — ERP, CRM, 3PL, Klaviyo — test it hard, deploy, and hand over the code and repositories in full.

    Fully tested
  4. 04 · Support

    Support & maintain

    We keep it current with Shopify's API versions and deprecations, monitor uptime and webhooks, and iterate — owned code, not orphaned code.

    Monitored
The first 90 days

The first 90 days of a build, start to live.

No open-ended dev project that never quite ends. Here's roughly how a build goes from a conversation to live software you own.

  1. Days 1–10

    Discovery & spec

    We pin down exactly what you need, the integrations involved and how you'll own it — then agree a fixed scope, timeline and price.

  2. Days 10–40

    First working version

    You see a working version early — the core app or integration doing its job — so we steer against something real, not a document.

  3. Days 40–75

    Integrate & harden

    We wire it into your stack, handle the edge cases, add logging and monitoring, and test it hard against real data.

  4. Days 75–90

    Live & supported

    We deploy, hand over the code and repositories in full, and move onto support — keeping it current as Shopify changes.

Certified where it counts

A Shopify Partner, inside a full-service team.

So the software we engineer, the marketing driving traffic to it and the data measuring it all pull in the same direction — one team, one P&L, one source of truth.

Google Premier Partner Meta Business Partner Shopify Partner Klaviyo Partner TikTok Marketing Partner Microsoft Ads Partner Semrush Agency Partner
Award-winning growth UK Paid Media Awards Finalist 2026UK Paid Media AwardsFinalist 2026 Netty Awards Winner 2025Netty AwardsDouble Winner 2025
Free, no obligation

Get a free build consult.

Tell us what you're trying to build, integrate or replace. We'll tell you honestly whether custom is the right call, sketch the approach, and come back with a clear scope, timeline and price — including the payback on any app you're looking to cut. No obligation.

  • You own the code — every line, handed over in full
  • A named senior engineer, not a junior
  • We reply within 1 working day

Prefer to talk? Book a 20-min call → or call 0330 678 1100

Helps us tailor your audit.

We reply within 1 working day.

Questions, answered

App development questions, answered.

Do you build public or private Shopify apps?

Both. We build private (custom) apps installed on a single merchant's store, and public apps distributed through the Shopify App Store — plus embedded apps that live inside the Shopify admin. Most of our work is custom apps that do a specific job for one merchant: a self-hosted replacement for a costly third-party app, a reviews-to-rewards engine, a Google Shopping feed cleaner, locale-native transactional email. If you're weighing public versus private, we'll tell you which route actually fits your goal rather than defaulting to whichever is quicker to build.

Will our app pass Shopify's app review?

Yes — we build to Shopify's requirements from the start. We're a certified Shopify Partner, so we know what the review team checks: OAuth and permission scopes, GDPR and mandatory webhooks, performance, correct Billing API usage and the App Store listing requirements. For public App Store apps we build against those standards and handle the submission; private and custom apps aren't listed, so review doesn't apply — but we hold them to the same engineering bar. Either way you're not gambling on a rebuild after a rejection.

Who owns the code you build?

You do. Everything we build for you is yours — source code, repositories and infrastructure — handed over in full. That's the whole point of a custom build: instead of renting a third-party app forever, you own an asset outright. We can host and maintain it for you, or hand it to your own team; there's no lock-in and no per-month licence tax on software you paid us to build.

How do you handle maintenance and Shopify's platform updates?

Shopify ships breaking changes on a schedule — API versions are dated and older ones are retired, and checkout moved to Checkout Extensibility and Functions. We keep your app current: pinning and upgrading API versions, tracking deprecations, monitoring webhooks and uptime, and patching before something breaks. You can take a support-and-maintenance retainer so it's handled continuously, or we document everything and hand it to your team. Owned code doesn't have to mean orphaned code.

Can you cut our monthly app subscription costs?

Often, yes. Third-party apps bill every month forever, and the bill usually scales with your orders — so an app quietly charging a four-figure sum each year can be replaced by a self-hosted one you own for a one-off build cost. We did exactly this for a merchant: replaced a third-party app that was quietly charging around £1,125 a month with a self-hosted build we own outright, saving roughly £13,500 a year. Not every app is worth replacing — we'll model the payback honestly and only recommend it where the maths works.

Is headless (Hydrogen) worth it for us?

Sometimes — but not by default. Headless (Hydrogen and React on Shopify's Storefront API, or another front end) buys you total design control and can help performance, but it adds engineering cost and ongoing maintenance that many merchants don't need. For most stores a well-built theme with a fast, extended checkout performs just as well for far less. We'll give you a straight answer on whether headless will actually move your numbers, or whether the budget is better spent elsewhere.

What integrations have you built?

A wide range on and around Shopify: a self-hosted app that replaced a costly third-party one, a reviews-to-rewards engine (reviews in, automated reward codes and email out), a Google Shopping feed engine that cleans product data and fixes recurring Merchant Center rejections, locale-native transactional email with a post-purchase gifting engine, and a multi-store integration layer that lets a team manage many Shopify stores from one place. We also connect Shopify to ERP, CRM, 3PL and warehouse systems, and to marketing tools like Klaviyo — via APIs, webhooks and data pipelines.

How long does a build take, and how is it priced?

It depends on scope — a focused integration or feed tool can be a couple of weeks, while a full custom app with integrations is measured in months. We scope and price every project up front, as a fixed piece of work rather than an open-ended hourly bill, and larger builds ship in stages so you see a working version early. It all starts with a free build consult: we look at what you're trying to do, tell you honestly whether custom is the right call, and come back with a clear scope, timeline and price.

Make your tech an unfair advantage.

Book a free, senior-led build consult — we'll tell you whether custom is the right call and come back with a clear scope, timeline and price, including the payback on any app you're looking to cut. No obligation.

Senior-led · code you own · rated 4.9/5 by clients