When the App Store Doesn't Cut It, We Build It.
Custom Shopify apps for ERP integrations, B2B workflows, custom merchandising, and internal tools - engineered for reliability, owned by you.
Build vs Buy
Most "we need a custom app" conversations end with us recommending an off-the-shelf install. Custom only makes sense when an existing app forces you to compromise on revenue, ownership, or scale.
Build a custom app when…
- No App Store option solves the problem
- You need deep ERP / OMS / proprietary system integration
- App fees at your scale exceed build cost
- You need to own the roadmap and the data
Don't build when…
- · A proven app already solves it (reviews, loyalty, basic upsells)
- · You can configure your way to 90% of the value
- · The use case is generic and not strategically owned
- · You don't have an internal owner to maintain it
What We Build
ERP & OMS Integrations
Two-way sync between Shopify and NetSuite, SAP, Brightpearl, or your custom OMS - orders, inventory, fulfillment, and customer data, all reliable.
B2B & Wholesale Logic
Custom pricing tiers, gated catalogs, NET terms, and approval workflows that Shopify B2B alone can't handle.
Custom Merchandising
Dynamic bundle pricing, regional inventory rules, conditional product gating, and rules-based PDP behavior.
Webhook & Event Automation
Reliable event processing for orders, refunds, inventory, and customer changes - with retries, queues, and observability built in.
Data Pipelines & Reporting
Push Shopify data into your warehouse, BI tool, or proprietary dashboard. Clean, queryable, and reconciled.
Internal Admin Tools
Embedded Shopify Polaris UIs that let your ops, merch, and CX teams work without leaving Shopify admin.
Our Default Stack
Mainstream, well-supported tooling so any competent developer can maintain the app after we hand it off.
How We Build
Discovery & Build vs Buy
We pressure-test whether you actually need a custom app. If an existing app solves it, we'll tell you. If a build is justified, we scope it tight.
Architecture & Spec
API surface, data model, hosting, auth model, webhook strategy, and rate-limit budget - documented before a line of code is written.
Build & Integrate
Production-grade Node or Python on your cloud or ours. Shopify Admin GraphQL, queued webhooks, retries, and observability from day one.
QA & Hardening
Load testing, failure-mode testing, and webhook replay drills. Custom apps fail silently if you don't instrument them - we do.
Launch & Hand-off
Documentation, runbooks, and an optional ongoing support retainer so your internal team can own and extend the app.
Related Packages
Fixed-scope engagements that often complement a custom Shopify app build.
The Prototype: 4-Day Shopify Test Drive
See how we'd build for you
A 4-day engagement that delivers a functional Shopify storefront prototype with up to 10 products, brand-aligned theme, and a strategy brief on full buildout. The fastest way to evaluate fit before a larger engagement.
The Speed Pass: Site Speed Optimization
Pass Core Web Vitals
A site speed optimization engagement: full performance audit with Lighthouse and WebPageTest, Core Web Vitals tuning, and a before/after report with measurable benchmarks.
The Cart Upsell Sprint: AOV Lift Buildout
Lift AOV 8-15%
A cart and upsell engagement: Rebuy or Aftersell setup, in-cart upsell widget, post-purchase upsell flows, and a smart cart drawer.
Custom Shopify App FAQ
When does a custom Shopify app actually make sense?
Build a custom app when no App Store option solves your problem, when you need deep integration with internal systems (ERP, OMS, proprietary pricing), when app fees at your scale exceed build cost, or when you need to own the roadmap. For generic problems like reviews, loyalty, or basic upsells, install a proven app instead.
What kind of Shopify apps does DYODE build?
We build private Custom Apps installed on a single store - internal tools, integrations, and merchandising logic owned by your business. We do not build Public Apps for the Shopify App Store. If you're launching an app company, we'll point you to specialists who focus on multi-tenant app product businesses.
How much does a custom Shopify app cost?
Simple single-purpose internal apps run $15,000–$30,000. Mid-complexity embedded admin apps with webhooks and merchandising logic run $30,000–$75,000. Complex multi-system integrations start at $75,000 and scale up. These ranges assume production-grade architecture, testing, and documentation.
How long does it take to build a custom Shopify app?
Simple integrations: 2–4 weeks. Mid-complexity embedded admin apps: 4–8 weeks. Complex multi-system builds: 8–16 weeks.
Will my team be able to maintain the app after launch?
Yes. Every build ships with documentation, runbooks, and a structured hand-off. We use mainstream stacks (Node/TypeScript, Postgres, Remix) so any competent developer can extend the app. We also offer ongoing support retainers if you want us to stay involved.
Have a custom app idea?
Walk us through it. We'll give you an honest read on whether to build, buy, or stitch together what already exists.