Shopify apps extend what your store can do. Sometimes, the app you need does not exist. That is when custom app development makes sense.
Public vs Custom Apps
Public apps are listed in the Shopify App Store for anyone to use. Custom apps are built for your specific store's needs. Most businesses need custom apps for unique integrations.
What Apps Can Do
Apps can access Shopify's API to read and modify products, orders, customers, inventory, and more. They can add custom functionality to the admin panel, checkout, storefront, or all three.
App Development Basics
Shopify apps are built using the Shopify API and App Bridge. You need a server to host the app, a database, and frontend code for the admin interface. Shopify provides developer tools and documentation.
When to Build vs Buy
Buy an app when one exists that meets 80% of your needs. Build a custom app when you need specific functionality no existing app provides or when data security and privacy require a custom solution.
Development Cost
Simple custom apps start around $2,000–$5,000. Complex apps with multiple integrations can cost $15,000–$50,000. Annual maintenance adds 15–20% of development cost.
Custom app development is an investment. Only pursue it when the functionality directly drives revenue or operational efficiency.