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## Resource: Introduction

## Article: apps-introduction

## Article Link: https://dev.wix.com/docs/sdk/host-modules/workspace/apps/introduction.md

## Article Content:

# About the Apps API

The Apps API allows you to programmatically start the following processes for [Wix apps](https://dev.wix.com/docs/build-apps/get-started/overview/about-wix-apps.md):
- Installation
- Update
- Purchase plan
- Contact support

With the Apps API you can:

- Make sure that Wix users install and update Wix apps which your project depends on.
- Start the purchase plan process to prompt Wix users to purchase a premium plan on a Wix app.
- Start the contact support process to make user support easy to access.

## Before you begin

It's important to note the following points before starting to code:

- Installation and update flows may require Wix user consent to permissions.
- Purchase plan flows vary depending on whether the app is made by Wix or by a 3rd-party and on specific app configurations.

<!-- ## Use cases

- [Update an app when an update is available](invalid-url). -->

## Terminology

- **Wix app:** An app available in the [Wix App Market](https://www.wix.com/app-market/).
- **3rd-party app:** An app developed by external developers and distributed through the [Wix App Market](https://www.wix.com/app-market/).
- **Update flow:** The process of updating an installed app to its most recently released version.
- **Purchase plan flow:** The process of purchasing a premium plan for a Wix app.