About frequency capping
Frequency caps help you:
- Limit how often a line item is served to the same user.
- Specify the number of impressions that will be delivered to a single user in a specific period of time.
- Specify time ranges in minutes, hours, days, weeks, or months. You may also specify a lifetime cap.
- Apply multiple rules. For example, you can set a frequency cap limiting the same user to one impression per day and three impressions per week.
For ads served on the web, frequency caps only work with users who accept cookies. Mobile applications use an identifier from the device rather than a browser cookie.
When using delayed impressions (for example, native, interstitial, and video ads), frequency caps are applied when ads are served, not when impressions are logged.