monkeyman.agency
monkeyman.agency
Phase 03 · Scale

Custom Shopify app development, for the job no app does.

No app in the Shopify App Store does exactly what you need. We are a Shopify app development company that builds custom Shopify apps, public, private, or embedded, on the modern Shopify CLI, Polaris, and App Bridge, to do the specific job your business needs done.

Discuss a custom app See our work
Stage
03
Engagement
Custom project
Timeline
4-12 weeks
Phase
Scale
The problem

When off-the-shelf apps fall short.

  • You're paying for 8 apps that almost solve your problem
  • Your operations team has a workflow no app supports
  • You want a feature that would be a real competitive moat
What you get

Every deliverable, listed.

  • 01 Custom Shopify app (private, public, or embedded admin)
  • 02 Built on Shopify CLI 3, React + Polaris, App Bridge
  • 03 Storefront API or Admin API integrations
  • 04 Webhooks, scheduled jobs, queue handling
  • 05 Hosted on your infrastructure or ours
  • 06 Documentation + handoff
  • 07 App Store listing (if public), copy, screenshots, video, submission
Pricing
Custom project
4-12 weeks · Project-priced

What's included

  • Custom Shopify app (private, public, or embedded admin)
  • Built on Shopify CLI 3, React + Polaris, App Bridge
  • Storefront API or Admin API integrations
  • Webhooks, scheduled jobs, queue handling
  • Hosted on your infrastructure or ours
  • Documentation + handoff
  • App Store listing if public: copy, screenshots, video, submission

What costs extra

  • Ongoing maintenance retainer: monthly, see Maintenance service
  • Hosting infrastructure if we host: at-cost passthrough

Not included

  • Shopify Partner account fees
  • Third-party API subscription costs
Where we deliver this work

Remote-first Shopify studio. Active engagements right now in US (NY · CA · TX) · UK (London · Manchester) · UAE (Dubai) · Spain · Brazil · Switzerland · Australia.

Time zone overlap on every working day.

Shopify app development services we offer

Shopify app development covers more ground than most stores expect, and the right shape depends on who the app serves. These are the builds we run, all on the modern Shopify CLI with React, Polaris, and App Bridge:

Private and custom apps. Built for your store only. Operations tooling, custom integrations, and workflow automation that the App Store does not sell, without the overhead of public distribution.

Public App Store apps. Built for distribution and revenue. We handle the app itself plus the listing: copy, screenshots, video, billing, and the App Store review process.

Embedded admin apps. Apps that live inside the Shopify admin via App Bridge, so your team works in one place instead of juggling a separate dashboard.

Shopify plugin development. If you are searching for “plugins,” this is the same discipline, Shopify calls them apps. Small single-job plugins are often the fastest wins we build.

Shopify mobile app development. Mobile-first storefronts on the Storefront API, or a native shopping app where the economics genuinely justify one. We will tell you honestly which that is.

How we develop a Shopify app

  1. Scope. A short call to define the job the app must do, the API surfaces it touches, and where it runs. You get a fixed written quote inside 48 hours.
  2. Design the data flow. Webhooks, scheduled jobs, and queue handling designed before code, so the app behaves under real load rather than just in a demo.
  3. Build on the CLI. Shopify CLI 3, React + Polaris for the UI, App Bridge for embedded surfaces, Storefront or Admin API for the commerce logic.
  4. Ship and hand off. Deployed to your infrastructure or ours, documented, and handed over. Public apps go through App Store review with the listing prepared by us.

Why choose our Shopify app development company

The difference between an app that helps and an app that haunts you is maintenance economics. We build on Shopify’s current stack (CLI 3, Polaris, App Bridge) rather than legacy scaffolds, so the app survives platform changes instead of breaking on them. We document what we ship, and most clients move the app onto a maintenance retainer after launch so it keeps pace with Shopify’s API versioning.

If what you actually need is ongoing development capacity rather than one app, hire a Shopify developer through us instead, a dedicated or part-time developer is often the better shape for a rolling roadmap.

Shopify App Development clients we've shipped

Questions

Probably already answered.

Public app or private?

Depends on your goal. Public = revenue + SEO + ecosystem footprint. Private = bespoke for your stores only. Embedded = lives inside Admin without distribution complexity. We help you choose.

Where does the app run?

Default is hosted on Vercel or Cloudflare for the front-of-house and Fly/Render for stateful jobs. We can also deploy onto your existing infrastructure.

Do you maintain the app afterwards?

Yes, most clients move into a maintenance retainer post-launch.

How much does Shopify app development cost?

Every app is project-priced after a scoping call, because a small embedded admin tool and a public App Store app with billing are genuinely different builds. What drives the cost is the number of API surfaces involved, whether the app needs its own database and background jobs, and whether it ships to the App Store with review and billing. You get a fixed written quote inside 48 hours of the scoping call.

Can you develop a mobile app for my Shopify store?

Yes. Shopify mobile app development usually means either a mobile-first storefront app built on the Storefront API or a mobile shopping app via a framework like Hydrogen. We scope which fits your case, and we are honest when a well-built mobile web experience will outperform a native app for the money.

Do you build Shopify plugins?

Yes, "Shopify plugin" and "Shopify app" are the same thing, the platform calls them apps. Whether you need a small private plugin for one workflow or a full public app, the build runs on the same Shopify CLI and API foundations.

How long does it take to create a Shopify app?

Most custom Shopify apps ship in 4-12 weeks. A small embedded admin tool sits at the short end, a public App Store app with billing, review, and listing assets at the long end. The scoping call gives you a written timeline before anything starts.

Pairs with Scale

What buyers usually pick alongside shopify app development.

Most engagements stack two or three of these. Send everything in one audit and we'll scope across.

Discuss a custom app

Tell us what you need built. We'll send back a build plan.

Free build plan within 48 hours, scope, architecture, timeline. If shopify app development is the right call, we'll quote it.

Phone (optional)