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 price band. We build all four, for clients and for our own Miko app suite, so these are numbers from delivery, not guesswork.

The Four Kinds of Shopify App, Priced

1. Private admin app: $5,000 to $12,000 USD. 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).

2. Checkout Extensions and Shopify Functions: $12,000 to $30,000 USD. 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.

3. Integration app: $15,000 to $50,000 USD. 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. Our Odoo integration service and Live Odoo Connector app are this category.

4. Public App Store app: $25,000 to $80,000+ USD. 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.

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.
• Maintenance retainer: $200 to $2,000 USD/month depending on app criticality and support load.

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.

Frequently Asked Questions

How much does it cost to develop a Shopify app?

$5,000 to $12,000 USD for a private admin app, $12,000 to $30,000 for checkout extension work, $15,000 to $50,000 for ERP integrations, and $25,000 to $80,000+ for a public App Store app.

How long does it take?

Private apps: 3 to 6 weeks. Checkout work: 4 to 8 weeks including review. Integrations: 6 to 12 weeks. Public App Store apps: 8 to 16 weeks including listing and review.

What are the ongoing costs?

Hosting at $20 to $200 per month, quarterly Shopify API version upkeep, and a maintenance retainer of $200 to $2,000 per month depending on criticality.

Custom app or existing app?

Buy when an existing app covers 80%+ of the need. Build when you are stacking multiple apps for one workflow, per-order pricing scales badly with your volume, or the workflow is unique to your business.