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Ad frequency measures how many times the same person sees a specific advert within a set period of time. It is a common metric used in digital advertising to understand how often an ad is being shown to the same audience.
If someone sees the same advert three times during a campaign, the ad frequency for that person is three.
Frequency helps advertisers understand whether their message is being seen enough to make an impact, or whether it is being shown too often and becoming repetitive.
Advertising usually works through repetition. Seeing a message more than once helps people recognise a brand and remember it later.
If frequency is too low, people may not notice the advert at all. If frequency is too high, the advert can start to feel intrusive or annoying.
Finding the right balance helps campaigns stay effective without overwhelming the audience.
Ad frequency is closely related to impressions, but the two metrics measure different things.
Impressions count the total number of times an advert is displayed. Frequency looks at how many times the average person sees that advert.
For example:
In this case the average frequency would be five, meaning each person saw the advert about five times.
Very high frequency can lead to what marketers call ad fatigue. This happens when people see the same advert so many times that they stop paying attention to it.
Signs of ad fatigue include:
Refreshing creative or adjusting targeting can often solve the problem.
Advertisers usually control frequency through campaign settings or audience targeting. Many platforms allow you to set a frequency cap, which limits how many times a person can see the same advert in a certain period.
Other ways to manage frequency include:
These adjustments help keep campaigns effective while avoiding overexposure.
Ad frequency is commonly tracked across platforms such as search, social media, and display advertising. Monitoring it alongside other metrics like click-through rate and conversions helps advertisers understand how well their campaigns are performing.
Used correctly, frequency gives advertisers a clearer picture of how their message is reaching people and whether their campaigns are staying effective over time.
