What a Custom Shopify App Really Costs in 2026

"How much does a Shopify app cost?" is unanswerable until you say which of the four kinds of app you mean. Each has a different scope, a different review process, and a different cost profile. We build all four, for clients and for our own Miko app suite. Our own price is published: custom Shopify apps and integrations are typically USD 1,800 to 50,000, fixed-price for an agreed scope, and enterprise, Shopify Plus and full ERP integration work starts at USD 15,000. The full list is on our pricing page, and our Shopify developer cost guide compares hourly and project rates across freelancers and agencies. Where this post quotes other companies' figures, it names the source and the date we checked it.

The Four Kinds of Shopify App, Priced

Where a build lands inside our USD 1,800 to 50,000 range depends on its type and on the drivers in the next section. We do not publish a separate price per type, because two apps of the same type can differ tenfold in scope. Here is what makes each type cheaper or dearer.

1. Private admin app. An embedded app only your store uses: custom dashboards, bulk operations, reporting, internal tools. Built on the Admin API with Polaris UI so it feels native. No App Store review, which keeps timelines short (3 to 6 weeks). Usually the lowest-cost type: cheapest when it does one job on Shopify data alone, dearer when it needs interactive dashboards, bulk operations across a large catalog, or data from another system.

2. Checkout Extensions and Shopify Functions. Delivery-day pickers, in-checkout upsells, trust modules, tiered discount logic, shipping filtering. This is the highest-ROI category because it acts directly on checkout conversion, and it is Plus-gated at full depth: see our Shopify vs Shopify Plus breakdown for whether that gate is worth passing. Cost rises with the number of checkout scenarios to test (markets, currencies, shipping and discount combinations) and falls when the logic fits one Function with clear rules.

3. Integration app. Real-time sync between Shopify and an ERP, WMS, POS, or accounting system: webhook processing, retry and error recovery, data transformation, monitoring. Complexity lives on the other system's side; syncing with clean APIs like Odoo costs less than legacy SOAP-era systems, and a one-way nightly export costs far less than a two-way sync with error recovery. Full ERP integration sits in our enterprise band, from USD 15,000. Our Odoo integration service and Live Odoo Connector app are this category.

4. Public App Store app. Everything above plus what merchants never see: Shopify billing integration, onboarding flows, empty states, multi-store data isolation, GDPR webhooks, listing assets, and passing App Store review. This is a product business, not a project; budget for iteration after launch. It is the most expensive type because none of that shared infrastructure is optional: a full App Store product is considerably more than a focused single-purpose app, so we scope it in phases, each with its own fixed price.

What the wider market quotes (checked 30 September 2026). These are other companies' published figures, not our prices. Identixweb's 2026 cost guide (updated 8 May 2026) puts a basic custom app at USD 5,000 to 10,000, a mid-level app with integrations and custom logic at USD 10,000 to 25,000, and an advanced app at USD 40,000 to 80,000+. ShopExperts' 2026 guide (27 May 2026) puts a simple private app at USD 5,000 to 25,000, a substantial private app with multiple features and integrations at USD 15,000 to 60,000, and an MVP public App Store app at USD 30,000 to 150,000. Neither guide prices checkout extensions separately.

What Actually Drives the Price

• Checkout involvement. Anything touching checkout goes through stricter review and testing.
• Third-party APIs. Every external system adds auth, rate limits, and failure modes to engineer around.
• Data volume. Syncing 500 SKUs is a loop; syncing 200,000 needs bulk operations, queues, and progress UX.
• Multi-store support. Public apps must isolate every merchant's data and settings cleanly.
• UI depth. A settings page is cheap; an interactive dashboard with charts and filters is not.

The Running Costs Nobody Quotes

• Hosting: $20 to $200 USD/month on managed platforms (Railway, Fly.io, Heroku) for typical Remix + Prisma apps.
• API upkeep: Shopify ships quarterly API versions; deprecations need handling about twice a year.
• Support retainer: ours start at USD 450 a month (see pricing); the hours you need depend on how critical the app is and how much support load it carries.

Build vs Buy: The Honest Math

If an existing app covers 80% or more of the requirement, buy it: $20 to $300 a month beats a five-figure build every time. Custom wins in three situations: you are stacking three or four apps to fake one workflow, per-order app pricing is scaling painfully with your volume, or the workflow is genuinely yours and no app models it. The full framework with payback examples is in our custom app ROI analysis.