# Import the UnityAds library

> Import the UnityAds library to start using the Unity Ads SDK APIs.

To access Unity Ads SDK APIs in an iOS project, import the `UnityAds.h` library. This enables direct use of the Unity Ads SDK classes, functions, interfaces, and listeners in your app code.

Without this import, you can’t implement ad content in your app, such as rewarded, interstitial, or banner ads.

Include the following import in every file where you need to use Unity Ads SDK API functionality.

1. **Swift**

   ```swift
   import UnityAds
   ```

2. **Objective-C**

   ```objective-c
   #import <UnityAds/UnityAds.h>
   ```