// glossary

App marketing terms, explained in one paragraph each.

The words in your dashboards and in our reports, defined the way we use them.

App Store Optimization (ASO)

Improving how an app is found and chosen on the App Store and Google Play.

Apple Search Ads

Apple's ad platform for placements in App Store search results and on the Today and product pages.

Churn

The share of users or subscribers who stop using or paying in a period.

Cohort

A group of users who installed in the same period, tracked together over time.

Conversion rate (store)

The share of people who see your store page and install.

Cost per trial

Ad spend divided by the number of free trials started from that spend.

Custom product pages

Alternative App Store product pages with their own screenshots and text, each with its own URL.

Google App Campaigns

Google's automated campaign type that places app ads across Search, Play, YouTube and the Display network.

Growth loop

A system where the output, a user, becomes the input that brings the next user.

Impressions

How often your app appeared in search results, charts or featuring.

Keyword difficulty

How hard it is to rank in the top ten for a keyword, based on who already ranks there.

Keyword field

The 100 character field on the App Store that is indexed but never shown to users.

Lifetime value (LTV)

The revenue one user is expected to generate over their whole time in the app.

Localization

Writing a store listing for a market in its own language and from its own keyword list.

Metadata

The text and assets that describe an app in the stores: title, subtitle, descriptions, keywords, icon, screenshots.

Mobile measurement partner (MMP)

A third party service that attributes installs and events to ad campaigns across networks.

Organic loop

Growth from search, content, comments and reviews, with no ad spend.

Paid loop

Revenue funds ads, ads bring users, their revenue funds more ads.

Payback period

The number of days until the revenue from a cohort of users covers what it cost to acquire them.

Push permission prompt

The system dialog that asks users to allow notifications.

Retention (day 1, 7, 30)

The share of users who return on a given day after install.

Retention loop

Users who stay make the other loops pay, and every fix raises the value of every install.

Return on ad spend (ROAS)

Revenue attributed to a campaign divided by its spend, usually within a fixed window.

Search volume

An estimate of how often a keyword is searched in a store, per country and per month.

SKAdNetwork

Apple's privacy preserving attribution framework for iOS ad campaigns.

Spark Ads

TikTok ads that boost an existing organic post instead of running a separate creative.

Trial to paid rate

The share of free trials that convert into a paid subscription.

User generated content (UGC)

Videos and posts made by users or creators in their own voice rather than by the brand.

Win back

An offer or message sent to users who stopped using the app or let a trial lapse.

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