---
title: App surfaces references
description: >-
  Explore API references for App Home, Admin, Checkout, Customer accounts, and
  POS.
api_name: app-surfaces
source_url:
  html: 'https://shopify.dev/docs/api/app-surfaces'
  md: 'https://shopify.dev/docs/api/app-surfaces.md'
---

# App surfaces references

Shopify apps can appear across multiple surfaces in the Shopify platform. Each surface has its own set of available APIs and components.

All app surfaces use [Polaris](https://shopify.dev/docs/api/app-surfaces/using-polaris-web-components), Shopify's unified UI framework built on web components, to deliver a consistent experience across the platform.

**Info:**

For an overview of all surfaces and how to build apps for them, refer to [App surfaces](https://shopify.dev/docs/apps/build/app-surfaces).

[App Home\
\
](https://shopify.dev/docs/api/app-home)

[Build your app's main page in Shopify admin using App Bridge and Polaris.](https://shopify.dev/docs/api/app-home)

[Admin UI extensions\
\
](https://shopify.dev/docs/api/admin-extensions)

[Add custom actions and blocks from your app to resource pages in the Shopify admin, including products, orders, and customers.](https://shopify.dev/docs/api/admin-extensions)

[Checkout UI extensions\
\
](https://shopify.dev/docs/api/checkout-ui-extensions)

[Build custom functionality that merchants can install at defined points in the checkout flow, including product information, shipping, payment, order summary, and Shop Pay.](https://shopify.dev/docs/api/checkout-ui-extensions)

[Customer account UI extensions\
\
](https://shopify.dev/docs/api/customer-account-ui-extensions)

[Build custom functionality that merchants can install at defined points on the order index, order status, and profile pages in customer accounts.](https://shopify.dev/docs/api/customer-account-ui-extensions)

[POS UI extensions\
\
](https://shopify.dev/docs/api/pos-ui-extensions)

[Build custom functionality that merchants can install at defined points in the Shopify Point of Sale (POS) app, including the smart grid, cart, and post-purchase screens.](https://shopify.dev/docs/api/pos-ui-extensions)

***