Session Length

This measures how much time a user spends in the app during a single session. Longer session lengths often indicate deeper engagement.

Metrics

More terms of 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

Click-Through Rate (CTR) mobile-advertising-glossary-metrics

CTR is the ratio of clicks to impressions, expressed as a percentage. It shows how effective an ad is at encouraging users to engage: CTR = (Clicks / Impressions) * 100. High CTR often indicates strong ad relevance and appeal.

Metrics

App Crashes mobile-advertising-glossary-metrics

The rate at which an app unexpectedly closes during user sessions. Expressed as (Crashes ÷ Sessions) × 100%. High crash rates degrade UX and negatively impact app ratings.

Metrics

Session Frequency mobile-advertising-glossary-metrics

How often a user returns to the app in a given time frame. High frequency suggests strong engagement and app stickiness.

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

App Launch Time mobile-advertising-glossary-metrics

Time from tapping the app icon until users see and interact with the app. Includes Time to Initial Display (TTID) and Time to Fully Drawn (TTFD). Typical targets: < 5 s cold start, < 1.5–2 s warm/hot start

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