0+Custom apps built
and live in production
Shopify App Development Servicesand live in production
Custom Shopify App Development That Scales Your Store
Your store's edge is not the platform. It is the logic no off-the-shelf app can replicate. Redefine builds private apps, public apps, and custom integrations that automate the work slowing your team down.
Submit brief → call within 48 hours → scoped proposal in 3 days → Sprint 1 within 1 week of sign-off
Your team's time investment is 2 to 3 hours per week: one discovery call, async brief feedback on scope, and a final sign-off sprint. We handle everything else.
Shopify Partner certified
No commitment. No pitch.
Scoped before any dev starts
0+
Custom Apps Shipped
$0M+
Client Revenue Enabled
0+
Integrations Built
0hr
Average First Build Sprint
Service Overview
The hidden cost of patching your store with the wrong tools
The Old Way: App store band-aids
Cost
Three apps doing one job. Monthly fees stack up: $29 here, $49 there, $99 for the one that almost works.
Risk
Every app update is a potential break. Support tickets go to vendors who do not know your store.
Scale
Generic apps stop at the edge of your use case. The work your team cannot automate gets done manually, forever.
Speed
Each installed app adds script weight. Page load suffers. Your conversion rate pays the price.
The New Way: Custom Shopify app
Cost
One app built for your exact workflow. Cancel five subscriptions. The custom build pays for itself inside six months.
Risk
You own the code. Updates happen on your timeline. Support comes from the team that built it and knows every line.
Scale
Logic built around your business rules. Every edge case handled. Automation that grows as your order volume grows.
Speed
Lean, purpose-built code. No bloat from a vendor feature set you do not use. Your store stays fast where it matters most.
Return on Investment Calculator
See what a custom app is worth to your store
Adjust the inputs below. The calculator shows you the true annual cost of your current workarounds and the projected return on a custom build.
12 hours
1 hour60 hours
$45/hr
$20/hr$200/hr
$280/mo
$0$2,000/mo
These are conservative estimates. The actual cost of manual error, delayed fulfillment, and missed automation compounds every quarter.
Annual cost of current workarounds
$30,888
Manual labor plus app subscriptions you could replace with one purpose-built solution
Monthly labor waste
$2,340
Subscription overhead (year)
$3,360
Estimated payback period
4.8 months
Based on a typical custom app investment range. Exact scoping delivered after your free assessment.
Submit brief → call within 48 hours → scoped proposal in 3 days → Sprint 1 within 1 week of sign-off
Scope and Sub-Services
Every type of custom Shopify app development, in-house
From private back-office automation to public apps listed on the Shopify App Store, Redefine scopes, builds, and supports them all.
Private App Development
Built exclusively for your store. Automates internal workflows: inventory syncing, order routing, enterprise resource planning connections, custom pricing logic, staff portals.
- Not visible or installable by other merchants
- Full Shopify Admin API access for deep automation
- Delivered in 2 to 6 weeks
- You own the code, no monthly app fee
Live Sync Status
Shopify
LiveEnterprise Resource Planning (NetSuite)
Live3PL Warehouse
SyncingAmazon FBA
Queued
Last sync completed
47 seconds ago · 1,284 SKUs updated
Public App Development
Turn your proprietary workflow into a revenue stream. Build a listed app on the Shopify App Store and reach more than 2 million merchants.
- OAuth flow and Shopify App Store submission support
- Billing API for subscription or per-use monetization
- Embedded app user interface built with Shopify App Bridge
- Review process guidance from Shopify Partners
Your App Name
by Redefine
★★★★★4.9 (214 reviews)
2.1K
Installs
$49
Per month
$103K
Monthly recurring revenue
Listed on Shopify App Store
Custom Shopify Integrations
Connect Shopify to any platform using REST or GraphQL APIs. Enterprise resource planning, customer relationship management, warehouse management, product information management, Amazon, marketplaces, payment gateways, and data warehouses.
- Real-time data sync with error handling and retry logic
- Webhook-driven event architecture for instant updates
- Full audit trail and monitoring dashboard included
Event Stream
200order.created #48821 synced to NetSuite
200inventory.update SKU-3892 pushed to 3PL
200customer.create CRM record created
202fulfillment.event queued, retrying
...product.update propagating to Amazon
Uptime today99.98%
API and Webhook Engineering
Build on the Shopify Admin API, Storefront API, and GraphQL to unlock functionality that no app can access. Automate anything the platform exposes.
- Admin API, Storefront API, and GraphQL expertise
- Secure webhook processing with signature verification
- Metafield and Metaobject API for custom data models
- Shopify Functions for custom discounts and checkout logic
query GetOrderDetails {
order(id: "gid://...") {
id
name
totalPriceSet {
shopMoney { amount }
}
lineItems(first: 10) {
edges { node { title quantity } }
}
}
}
GraphQL API · 14ms average response
Technical Architecture
Shopify sits at the center of your stack
Click any system node to see how a custom app connects it to your Shopify store. Every integration is designed for reliability, speed, and auditability.
Enterprise Resource Planning / NetSuite
Bi-directional order, inventory, and customer sync.
Reconciliation runs on schedule or via webhook trigger.
Amazon / Marketplaces
Listing, pricing, and fulfillment sync with error handling and
rate-limit management built in.
3PL / Warehouse Management System
Push orders and pull tracking updates automatically. Supports
ShipBob, ShipStation, and custom warehouse APIs.
Customer Relationship Management / HubSpot
Customer, order, and tag data flows to your customer
relationship management platform in real time. Segment sync
and lifecycle event hooks included.
Core Platform
Shopify + Custom App Layer
Admin APIStorefront APIGraphQLWebhooksShopify FunctionsApp Bridge
Product Information Management / Catalog
Product data, metafields, and media synced from your master
catalog into Shopify with version control.
Payments / Finance
Custom payment gateways, reconciliation exports, and Shopify
Payments data piped to accounting systems.
Analytics / Business Intelligence
Order, product, and customer events streamed to BigQuery,
Snowflake, or your reporting stack.
Email / Klaviyo
Custom event tracking, profile enrichment, and segment sync
beyond what native Klaviyo integrations expose.
Built with:Node.jsNext.jsPythonREST + GraphQLAWS / GCPShopify Partner
Proof
What a custom-built system does to your revenue
Eyeglasses123
Online eyewear retailer, multi-channel
Result
$0M
Annual revenue achieved after building a custom Shopify order management system and automated multi-channel inventory sync
What they do
An online eyewear retailer scaling across Shopify, Amazon, and external marketplaces with a rapidly growing stock-keeping-unit catalog.
The Problem
Manual processes, fragmented inventory across channels, no real-time sync, and rising operational costs were blocking growth at every stage.
The Solution
A custom order management system, automated inventory sync with restocking alerts, and a unified data flow across Shopify and all marketplace channels. Operational costs dropped. Accuracy improved. Revenue scaled.
Why Redefine
Three things that set apart the agencies that actually deliver
Most Shopify app development agencies give you code. Redefine gives you a system you can depend on. Click each claim to see what that means in practice.
01
You own the code. Full stop.
No vendor lock-in. No recurring license for access to your own logic.
Every line of code Redefine writes transfers to you at delivery. Your Git repository. Your infrastructure. Your team can extend, modify, or hand it to another agency without permission from anyone. Other agencies charge a retainer to maintain apps they technically own.
Full source code delivered on completion
No access fees or vendor account dependency
Architecture documentation for your internal team
02
Scope is fixed before a single line is written.
No surprise invoices when you change your mind. The change process is defined upfront.
Redefine runs a paid discovery sprint before any development starts. You get a detailed technical specification, timeline, and fixed-price quote. If scope changes, the change order process is documented and priced transparently before any new work begins.
Discovery sprint produces a written specification
Fixed-price engagement, no time-and-materials
surprises
Signed-off milestones before each phase begins
03
The team that builds it supports it.
No handoff to a junior support queue. The original engineers maintain the system.
Every Redefine app delivery includes a 30-day stabilization window and an optional ongoing support retainer. The engineers who scoped and built your app handle issues, optimizations, and Shopify API version updates. You never explain the system from scratch to someone new.
30-day post-launch support window included
Shopify API deprecation handled proactively
Optional monthly retainer for ongoing feature
work
Frequently Asked Questions
Questions founders ask before they book
If yours is not here, ask it in the free consultation. There is no pitch attached.
Book Free ConsultationA Shopify private app is custom software built exclusively for your store. It connects to Shopify through the Admin API and can automate workflows, sync data with external systems, or add functionality no off-the-shelf app offers. You need one when your operations have moved beyond what available apps can support, or when patching three apps together is costing more than building the right one.
Cost scales with scope. A focused private app handling a single workflow (for example, syncing Shopify orders to your enterprise resource planning system) runs in the $3,000 to $8,000 range. A multi-system integration platform with a custom admin interface, webhook infrastructure, and monitoring can run $15,000 to $40,000 or more. We always scope before we quote so you know the number before any development starts. See app development pricing for indicative ranges.
A focused private app or single integration can ship in 2 to 4 weeks. A public app with Shopify App Bridge, billing API, and App Store submission takes 6 to 10 weeks. Complex multi-system platforms run 8 to 16 weeks. Every project starts with a discovery sprint that produces a written timeline you sign off before development begins.
Yes. Enterprise resource planning and warehouse management system integrations are among the most common projects we deliver. We have built connections to NetSuite, SAP Business One, Microsoft Dynamics, ShipBob, ShipStation, and custom warehouse systems. The integration handles order push, inventory pull, fulfillment updates, and reconciliation on schedules or via webhook triggers. If your system has an API, we can connect it to Shopify.
Shopify releases API updates twice per year and deprecates old versions on a 12-month cycle. Redefine monitors API versioning for every app we maintain and handles upgrades proactively, before deprecation creates a production issue. Clients on our support retainer never need to track API deprecation calendars themselves.
Is This Right for You?
A good fit and a bad fit, honestly
Good fit for
- Stores doing $500K or more per year with real operational volume
- Teams spending hours each week on manual tasks that should be automated
- Businesses that need Shopify connected to an external platform no existing app handles reliably
- Founders who want a single fixed scope, not an open-ended retainer with no defined end
Not a fit if
- Your store is pre-revenue or under $10K monthly, where an existing app will serve you better for now
- You need something live in less than two weeks with no discovery phase
- Your system has no API and requires manual export/import workflows only
- You want a solo freelancer and have no need for ongoing engineering support
Not sure? Tell us your situation and we will be straight with you. Start here →
Start Today
Your store deserves software built for it, not around it
Book a free 30-minute app assessment. We review your current stack, identify the highest-value automation opportunities, and scope a solution before any engagement starts.
No commitment. No pitch. Just a focused conversation about your operations.
Submit brief → call within 48 hours → scoped proposal in 3 days → Sprint 1 within 1 week of sign-off
Get Your Scoped Proposal
Tell us what your team is doing manually
A focused brief takes 3 minutes. We review it, map the highest-value automation, and send a scoped proposal within 3 business days.
Form
Call within 48 hours · proposal in 3 days · Sprint 1 within 1 week of sign-off
48-hour response
Call booked same day
Proposal in 3 days
Scoped, line-by-line
80+ apps shipped
Across Shopify Partners
You own the code
Full transfer at delivery