Set frequency capping for apps & ad units

Frequency capping lets you limit the number of times ads appear to the same person. When you set frequency capping for an entire app or a specific ad unit, you specify a limit to the number of impressions you’ll allow for an individual user during a period of time (per number of minutes, hours, or days). 

For example, you can set a frequency cap to show no more than 2 impressions per 30 minutes.  

Note: Consider the following: 

• Frequency caps apply to Google demand and third-party ad sources. 
• A change to frequency capping, such as changing the cap from two to three, can take up to a day to take effect.
• A slight server delay can occasionally result in the frequency cap that you've set being exceeded.
• The number of ads a user will view in an app is dependent upon both the ad unit-level and app-level frequency caps and which cap is reached first. 

Frequency capping for apps

Complete the following steps to enable or edit frequency capping across all interstitial, rewarded, and app open ad units in an app.

Note: frequency caps can't be set for native or banner ad units. 

1. Sign in to your AdMob account at https://apps.admob.com.
2. Click Apps in the sidebar.
3. Select the name of your app. If you can't find it in the list of recent apps, you can click View all apps to search a list of all of the apps you've added to AdMob.
4. Click App settings in the sidebar.
5. Click beside Frequency capping.
6. Click the toggle to enable or disable frequency capping.  
   1. After enabling, enter the number of impressions you want to allow to appear per user across all interstitial, rewarded, or app open ad units in this app and select a period of time (per number of minutes, hours, or days).
7. Click Save.

Frequency capping for ad units

You can set a frequency cap on an ad unit for the following ad formats: interstitial, rewarded, and app open. Complete the following steps to enable or edit frequency capping for an ad unit.

1. Sign in to your AdMob account at https://apps.admob.com.
2. Click Apps in the sidebar.
3. Select the name of your app. If you can't find it in the list of recent apps, you can click View all apps to search a list of all of the apps you've added to AdMob.
4. Click Ad units in the sidebar.
5. Click the ad unit you want to edit.
6. Click Advanced settings.  
7. Click beside Frequency capping.
8. Click the toggle to enable or disable frequency capping.  
9. Select a frequency capping option:
   1. After enabling, enter the number of impressions you want to allow to appear per user across any interstitial, rewarded, or app open in this app and select a period of time (per number of minutes, hours, or days). For example, you can set a frequency cap to show no more than 2 impressions per 30 minutes.
10. Click Save.