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Cost Per Action (CPA) definition

Cost Per Action (CPA)

CPA is the amount spent to drive a specific user action (e.g., a subscription, sign-up, or in-app purchase). It’s commonly used in performance-based advertising models.

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More terms of Metrics

Cost Per Install (CPI) mobile-advertising-glossary-metrics

CPI measures the cost to acquire a single app install: CPI = Total Spend / Number of Installs. It’s a standard KPI for user acquisition campaigns in the mobile app ecosystem.

Metrics

Ad Frequency mobile-advertising-glossary-metrics

The average number of times an ad is served to the same user. Helps assess saturation and avoid ad fatigue.

Metrics

Cost Per Click (CPC) mobile-advertising-glossary-metrics

CPC is the average amount paid by the advertiser for each user click on their ad. It's a common pricing model in paid search and social media advertising.

Metrics

Audio Duration mobile-advertising-glossary-metrics

Captures how long a user listens to an audio ad (e.g., complete plays, average duration, listen-through rate).

Metrics

Unique Reach mobile-advertising-glossary-metrics

The number of unique users (or devices/households) exposed to an ad at least once. Useful for understanding total unduplicated audience.

Metrics

Social Media Metrics mobile-advertising-glossary-metrics

Includes shares, comments, mentions, and sentiment around a campaign. Particularly relevant for cross-channel or influencer campaigns.

Metrics

Bid Rate mobile-advertising-glossary-metrics

In programmatic advertising, this is the proportion of total ad requests for which a DSP submits a bid. A low bid rate might indicate strict targeting or bidding filters.

Metrics

Impression mobile-advertising-glossary-metrics

An impression is counted each time an ad is served and appears on a user’s device screen, regardless of whether the user interacts with it. It is one of the most basic and foundational ad delivery metrics used to measure reach and exposure.

Metrics
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