How do you control ad frequency?

Meta allows frequency caps in reach and frequency buying. For auction campaigns, controlling frequency requires managing audience size relative to budget, rotating creatives regularly, and expanding targeting to reduce concentration.

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Creative Performance

What is Ad Frequency?

Ad frequency is the average number of times a single user sees a specific ad within a given time period.

Ad Frequency: Full Definition

Ad frequency measures how many times a unique user has been served a particular ad. It's calculated as total impressions divided by unique reach. A frequency of 4.0 means the average user in your target audience has seen the ad four times.

Frequency is a double-edged metric. At low levels (1–3), repetition builds brand recognition and increases the chance a user will act when they're ready. At high levels (5+), the same repetition triggers fatigue. Users become annoyed or tune out, causing CTR to decline and CPM to rise as the algorithm recognizes falling engagement.

Frequency management is central to creative refresh strategy. Most mobile UA teams set frequency caps or monitor frequency thresholds as triggers for introducing new creative variations.

Why Ad Frequency matters

Frequency is the root cause of creative fatigue. When frequency climbs above 4–6 on Meta without creative rotation, you're essentially burning budget on diminishing returns. Monitoring frequency alongside CTR trend gives you the earliest possible warning system for fatigue, allowing proactive creative rotation before performance collapses.

Formula

Frequency = Total Impressions ÷ Unique Reach

Example

“A mobile game campaign targeting lookalike audiences reaches 500,000 users with 2.8 million impressions over two weeks. That's a frequency of 5.6, above the typical fatigue threshold, and a clear signal for creative refresh.”

Frequently asked questions

On Meta, most practitioners consider 3–5 as the sweet spot for UA campaigns. Above 6–7, fatigue risk increases significantly. For retargeting campaigns with warm audiences, slightly higher frequencies (5–8) can be effective before fatigue hits.

Segwise Feature

Monitor fatigue signals with Segwise

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