Custom & private apps
Apps installed only on your store to automate internal work, extend the admin or connect Shopify to your other systems.
Custom Shopify App Development for Merchants & Brands
When an off-the-shelf app doesn't fit, we build one that does. Final Apps is a Shopify app development company in India that designs, builds and maintains custom Shopify apps for merchants and agencies worldwide.
Built by the team behind 9 Shopify App Store apps, including PDF Invoice Generator (rated 4.8 from 137 reviews), FSEO and FlowSend.
What we build
Custom Shopify Apps we build
Public Shopify App Store apps
Multi-merchant apps built to pass Shopify App Store review, with billing, onboarding and support flows.
Admin extensions
Admin actions, blocks and links that put your tools right inside Shopify's order, product and customer pages.
Third-party integrations
Sync Shopify with ERPs, CRMs, warehouses, accounting tools and marketplaces through APIs and webhooks.
Theme app extensions
Storefront app blocks and embeds that merchants add from the theme editor without editing theme code.
App rescue & maintenance
Update existing apps for new Shopify API versions, fix bugs and improve performance.
Process
How we work
From first call to launch, you work directly with the developers building your app.
Discovery & scoping
We map your workflow, the Shopify surfaces involved and what success looks like, then agree on a clear scope.
UX & architecture
We design screens with Shopify Polaris so the app feels native, and plan data, APIs, webhooks and permissions.
Build & test
We build on Shopify development stores, test against real order, product and customer data, and review with you each step.
Launch & support
We install it as a custom app on your store or prepare it for Shopify App Store review, then support and extend it.
Technology
Shopify platform expertise
Shopify Admin GraphQL APIStorefront APIWebhooksApp BridgePolarisShopify FunctionsTheme app extensionsAdmin UI extensionsCheckout UI extensionsShopify CLI
See it in our own apps: PDF Invoice Generator and SKU Code Generator and FSEO. Other services: Shopify POS Apps, Shopify B2B Apps, AI Shopify Apps, Shopify Sidekick Apps, Shopify Flow Apps. All services.
FAQ
Custom Shopify Apps FAQ
Common questions about Custom Shopify App Development with Final Apps.
What is custom Shopify app development?
It is building a Shopify app around your own workflow instead of adapting your business to an existing app. A custom app can extend the Shopify admin, automate tasks, add storefront features or connect Shopify to other systems.
What is the difference between a custom app and a public app?
A custom app is installed on one store (or one organisation's stores) and is not listed on the Shopify App Store. A public app is listed on the App Store, can be installed by any merchant and must pass Shopify's app review.
How much does a custom Shopify app cost?
It depends on scope: the Shopify surfaces involved, integrations, data volume and design work. Tell us what the app needs to do through our contact page and we will come back with scope and a quote.
How long does it take to build a Shopify app?
A focused app with a single workflow can take a few weeks. Apps with multiple integrations, POS or checkout extensions, or App Store submission take longer. We agree on timelines during scoping.
Do you work with merchants outside India?
Yes. We are based in Kochi, Kerala, and work with Shopify merchants and agencies worldwide.
Can you take over or update an existing Shopify app?
Yes. We can review an existing app, update it to current Shopify API versions, fix issues and add new features.