Custom Shopify App Development
When nothing in the Shopify App Store fits, or three near-misses each charge a monthly fee, we build the app that does. Bundles, B2B pricing, custom checkout logic and back-office integrations, written for the way your store sells. Globaprom delivers custom Shopify app development at a fixed price, in weeks, and the app is yours.
What a custom Shopify app can do
A custom Shopify app is software built for your store alone, plugged into Shopify through its official APIs. It reads and writes your products, orders and customers, adds screens inside the Shopify admin, and changes how the storefront and checkout behave.
Public apps cover common needs well. A custom app covers the ones specific to how you sell:
- Product bundles and kits with their own inventory and pricing rules that the standard variant model can't represent.
- B2B pricing with account-specific price lists, minimum orders and quote-to-order flows.
- Custom checkout logic through Shopify Functions, for back-end rules such as discounts and shipping, and Checkout Extensibility for the checkout interface itself.
- Back-office integrations that push orders to your ERP, sync stock from a warehouse or send data to accounting.
- Admin workflow tools: bulk operations, custom reports and the daily tools no public app offers.
Shopify Functions replaced the older Shopify Scripts, which stopped running on June 30, 2026, so checkout logic built this way stays supported. Your app can stay private to your store or, if you plan to sell it, be listed publicly. Both start from the same build.
When does a custom app beat a public one?
A custom app beats a public one when the public options force a compromise you keep paying for: a monthly fee for a feature that half fits, three apps stitched together for one workflow, or a gap no app fills at all. Past that point, an app you own costs less over its life than the subscriptions it replaces.
Take a store selling gift bundles that each contain several stock items. Public bundle apps either mismanage the component inventory or clash with the store's B2B pricing app, and support tickets pile up around every promotion. One custom app models the bundle, decrements the right stock and applies the account's price list. The conflict goes away, and so do the two subscriptions behind it.
You stop paying for compromises. The app does exactly what your store needs.
How we build and hand over your Shopify app
Scope, price and delivery date are fixed before we write code. You own the app and its code, so there's no per-install fee to us and no lock-in.
AI-assisted development keeps the build to weeks. Our engineers review, test and harden every line, because a checkout that breaks during a sale is worse than no app at all. We work inside Shopify's supported frameworks, never through hacks that break on the next update. And our translation-industry roots mean multilingual stores and market-specific logic are handled natively.
When the app needs to reach your back office, ecommerce ERP integration covers that layer. When orders arrive from Shopify plus other channels, a custom order management system ties them together. More in our custom ecommerce development overview.
Frequently Asked Questions
When should I build a custom Shopify app instead of installing one?
Build custom when no public app fits, when the ones that almost fit each charge a monthly fee for a partial match, or when you are stitching several apps together to cover one workflow. A custom app you own often costs less over its life than the subscriptions it replaces and does exactly what your store needs, with no compromise.
Can a custom app change the Shopify checkout?
Yes. Shopify Functions handles custom back-end rules such as discounts and shipping, and Checkout Extensibility customizes the checkout interface. These replaced the older Shopify Scripts, which stopped running on June 30, 2026, so a checkout built the current way stays supported. We build within Shopify's supported frameworks, never through hacks that break on an update.
Do I own the app you build?
Yes. Every app we build is yours, code included. It can stay private to your store or, if you plan to sell it, be listed publicly. There is no per-install fee to us and no lock-in. You approve the scope, price, and delivery date before we start, and the finished code is handed over to you.
Close the gap no public app fills
Tell us the workflow your current apps can't handle. You get a fixed scope, a fixed price and a delivery date in weeks.