SHOPIFY APP DEVELOPMENT

Shopify apps built by people who've already shipped three.

We build custom Shopify apps using Remix, Polaris, App Bridge, and the Admin GraphQL API. Native admin UI, mandatory webhooks done right, billing integration that handles edge cases, and full App Store submission. We've launched 3 of our own apps — Geo Redirect Xpert, Volume Discount, and Wishlist — so we know the App Store review process by heart.

See the process

MVP apps from $8,000 USD · 6–8 week delivery · App Store submission included

WHAT'S INCLUDED

Six things in every app we ship.

Native Shopify admin embed.

Built with Polaris design system + App Bridge so your app looks and feels like part of the Shopify admin. No jarring custom UI — merchants don't need to learn a new tool.

Remix or Next — your call.

Default stack is Shopify's Remix template. We use Next.js when teams have existing Next infrastructure. Both work; the official Remix path ships fastest to App Store.

Admin GraphQL + Storefront API.

Bulk operations for big catalogues, GraphQL Admin for app logic, Storefront API for theme-side rendering, App Proxy for custom storefront endpoints. Real Shopify primitives.

Billing + plan management baked in.

Shopify's billing API integrated correctly: free trials, subscription plans, usage-based billing, plan upgrades, prorations. We've shipped 3 of our own apps — we know the edge cases.

Webhooks + GDPR compliance.

All mandatory webhooks (app/uninstalled, customers/redact, customers/data_request, shop/redact) wired correctly. Mandatory privacy webhooks pass App Store review on first try.

App Store submission included.

We don't just build the app — we handle the full App Store review process. Listing copy, screenshots, demo video, review responses, BFS (Built for Shopify) prep where eligible.

THE PROCESS

Six steps. Eight weeks. App Store live.

Process honed across our own three apps. Every step has a clear deliverable.

  1. 1

    Scoping & spec

    Week 1

    Use cases, target merchant segment, billing model, App Store category, MVP feature list. Written tech spec with API surface, data model, and success criteria. Fixed quote.

  2. 2

    Design (Polaris)

    Week 2

    Admin UI screens designed in Figma using Polaris components. Onboarding flow, settings, dashboards, billing pages. Two design rounds included.

  3. 3

    Build — admin app

    Week 3-6

    Remix + Polaris + Prisma (or your DB of choice). Shopify session token auth, App Bridge, OAuth install flow, billing integration, webhook handlers, error reporting.

  4. 4

    Build — storefront extension

    Week 5-7

    App embed extension (theme-side widget), or app block (OS 2.0 sections), or app proxy (custom storefront API endpoints). Liquid + Vanilla JS or Web Components.

  5. 5

    App Store submission

    Week 7-8

    Full listing: tagline, description, screenshots (1280×800 minimum, 4-7 images), demo video (30-60s), GDPR docs, support email setup. Submit + handle review feedback.

  6. 6

    Launch + post-launch support

    Week 8 + 30 days

    App goes live in App Store. Monitor install funnel, error logs, support tickets. Bug fixes free for 30 days. We can also handle merchant onboarding emails for you.

TECH STACK

What we build with.

Default stack is Shopify's officially-recommended Remix template. Battle-tested, fastest path to App Store, and what most merchants' apps actually need.

  • Remix (Shopify's official app framework)
  • Polaris design system + App Bridge
  • Shopify Admin GraphQL Admin API
  • Shopify Storefront API
  • App Bridge React (admin embed)
  • Prisma + MySQL/Postgres for app data
  • Vercel / Render / Fly.io for hosting (or your existing infra)
  • Sentry / Logtail for error monitoring
VS. ALTERNATIVES

Specialist Shopify dev vs freelancer vs generic agency.

FeatureXpertshireFreelancerGeneric agency
Native Polaris admin UIdepends
Mandatory webhooks (GDPR) wireddepends
Billing API integrationdepends
App Store submission handledextra
Built-for-Shopify (BFS) prep
Theme-side extension (app block / embed)depends
Free 30-day post-launch supportextra
Fixed quote

↔ Swipe horizontally on mobile

FAQ

App development questions, answered.

How much does custom Shopify app development cost?

Custom Shopify app development costs $8,000–$15,000 for an MVP, $15,000–$30,000 for a mid-complexity app, and $30,000 or more for enterprise builds. An MVP means a Polaris admin interface plus one core feature — a custom discount rule, a specific automation, or a small reporting dashboard. Mid-complexity covers 5–10 features with billing, multiple webhooks and a theme app extension. Enterprise covers B2B logic, ERP integrations such as NetSuite or SAP, and multi-tenant architecture. The variable that moves the number most is not the admin UI, which is largely standard Polaris work, but the number of external systems the app has to stay in sync with. Xpertshire quotes a fixed price after a written scope, so the figure does not move mid-build. Smaller, well-defined jobs — a single integration or a theme-side fix — start at $1,000–$2,000.

How long does it take to build and launch a Shopify app?

An MVP Shopify app ships in 6–8 weeks from first scoping call to live on the App Store. Mid-complexity apps run 8–12 weeks. The schedule breaks down as roughly one week of scoping and written spec, one week of Polaris design, three to four weeks of admin build, two to three weeks of storefront extension work running in parallel, then submission. The longest single item is rarely the code — it is Shopify's App Store review, which takes 5–15 business days and can repeat if changes are requested. Because of that we submit as early as the app is functional and run polish work during the review window rather than after it. Having taken three of our own apps through this process, the sequencing is the part that saves weeks, not the coding speed.

Do you handle App Store submission and review?

Yes, Xpertshire handles the full Shopify App Store submission end to end. That covers listing copy, screenshots at the required 1280×800 minimum, a 30–60 second demo video, the app description and category, GDPR and privacy documentation, and support email setup. It also covers responding to Shopify's reviewer feedback, which almost always arrives: in our experience shipping three of our own apps — Geo Redirect Xpert, Xperts Volume Discount and AIRank Xpert — a first submission typically comes back with one or two rounds of required changes. The most common rejections we have hit are mandatory GDPR webhooks not wired correctly and billing implemented outside Shopify's Billing API. Both are avoidable at the spec stage, which is why we design for them from week one rather than patching after a rejection.

What's the difference between an embedded app, a theme app extension, and an app proxy?

Embedded app = the part merchants see in their Shopify admin (Polaris UI). Theme app extension = the part their CUSTOMERS see on the storefront (app blocks for OS 2.0 sections, app embeds for global widgets like cart drawers). App proxy = a custom URL endpoint on the storefront (e.g., yourstore.com/apps/your-app) that returns dynamic content. Most apps need 1-2 of these; some need all three.

Can you build a Built-for-Shopify (BFS) app?

Yes — and we recommend going for it from day one. BFS apps get prioritized in App Store search and earn merchant trust. Requirements: native Polaris UI, install/uninstall flow under 30 seconds, performance budget, support response time under 24h, app reviews 4.5+. We design for BFS criteria from the spec stage.

Do you build apps for Shopify Plus only?

We build apps that work on the standard Shopify plan AND on Plus. Plus-only features (Shopify Functions, Scripts, B2B, multi-store) are added when relevant to your use case. Most commercial apps target the standard plan first, with Plus features as upgrades.

Can you build my app idea? It's something Shopify doesn't natively support.

Almost certainly yes. Shopify's APIs cover a huge surface — products, orders, customers, discounts, fulfillment, shipping, subscriptions, B2B, markets, checkout. We've built A/B testing, custom redirects, country blocking, volume discounts, and complex billing logic — all on top of standard APIs. Tell us the use case in the scoping call.

What happens after the app launches?

30 days of free bug fixes and minor adjustments are included. After that, we offer monthly retainer plans starting at $1,500/month for ongoing development, support, and feature additions. Or you can take the codebase in-house — we hand off clean Remix code with documentation.

Got an app idea?

Send us the problem you're trying to solve and a rough sense of the merchant segment you'd target. We'll come back within 24 hours with a fixed quote and proposed feature scope.