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

DAU/MAU Ratio mobile-advertising-glossary-metrics

This metric indicates user stickiness or loyalty. A DAU/MAU ratio closer to 1 means users return frequently throughout the month.

Metrics

Install mobile-advertising-glossary-metrics

In mobile advertising, an install refers specifically to when a user downloads and successfully installs an app on their device, often following an ad interaction.

Metrics

Click mobile-advertising-glossary-metrics

A click occurs when a user taps or interacts with an ad, typically leading to a destination such as an app store page, website, or landing page. Clicks are crucial for measuring engagement.

Metrics

Daily Active Users (DAU) mobile-advertising-glossary-metrics

DAU measures the number of unique users who engage with the app on a daily basis. It's essential for tracking regular usage.

Metrics

Attention Metrics mobile-advertising-glossary-metrics

Metrics that assess how much attention users give to an ad, using data signals like eye tracking, time in-view, or interaction depth.

Metrics

Cost Per Action (CPA) mobile-advertising-glossary-metrics

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.

Metrics

Ad Fill Rate mobile-advertising-glossary-metrics

The percentage of ad requests that are successfully filled with an ad impression: Fill Rate = (Filled Requests / Total Requests) * 100. Low fill rates may suggest weak demand or misconfiguration.

Metrics