Wikimedia Apps/Team/iOS/Analysis

This is a WIP.

Webreqeust
The webrequest datasets contain logs of all the hits to the WMF's servers (specifically, the Varnish servers). This includes requests for page HTML, images, CSS, and Javascript, as well as requests to the API. For privacy reasons, this data is purged after 90 days. We use the webrequest table and its aggregated tables for app analysis. Specifically: Please note that webrequest data doesn't contain users' appInstallID if they choose not to send usage reports to the Wikipedia iOS app, regardless of whether they agree to send analytics data to Apple at the system level or not.
 * mobile_apps_uniques: Count how many different Android and iOS Wikipedia mobile apps installs accessed Wikimedia sites during the given day or month, determined as the number of app uuids appearing in the webrequest table (via the X-Analytics header or formerly the query part of the URL).
 * mobile apps session metrics: Contain aggregate stats about pageview sessions on the Android and iOS Wikipedia mobile apps, updated weekly.
 * Pageview_hourly

Event logging schema
The following list needed to be checked:

MobileWikiAppDailyStats

MobileWikiAppCreateAccount

MobileWikiAppEdit

MobileWikiAppLogin

MobileWikiAppProtectedEditAttempt

MobileWikiAppToCInteraction

MobileWikiAppNavMenu

MobileWikiAppArticleSuggestions

MobileWikiAppSearch

MobileWikiAppShareAFact

MobileWikiAppSavedPages

MobileWikiAppReadingAction

iTunes Connect and App Annie
iTunes Connect provides various metrics to measure the app's performance in App Store such as impression, product page views and app units. It also provides some usage metric from users who agree to share their diagnostics and usage information with Apple, such as sessions, active devices and retention.

Measure App Performance: https://help.apple.com/itunes-connect/developer/#/dev5340bf481

iTunes Connect Sales and Trends Guide: https://help.apple.com/itc/appssalesandtrends/

App Analytics Guide: https://help.apple.com/itc/appanalytics/

Discrepancy between iTunes and App Annie: People seem to think App Annie’s estimate is more reliable than iTunes Connect, but there is no solid proof.
 * App Analytics only displays data from devices running iOS 8 or tvOS 9, or later. Sales and Trends displays all sales data from devices running iOS, tvOS, and macOS.
 * App Analytics data is based on Coordinated Universal Time (UTC). By default, Sales and Trends data is shown in Coordinated Universal Time (UTC), but users can change the time zone to Pacific Standard Time (PST).
 * App Annie data is based on Pacific Time.

Metrics

 * Dimensions are the variables by which this metric can be broken down or filtered. See more details: https://help.apple.com/itunes-connect/developer/#/itc21781223f

Browse and Install
Useful ratio:
 * Conversion Rate: The ratio of app units to impression or product page views. Depending on your purpose, either the count of views or unique devices can be the denominator.

Usage
Useful ratio:
 * Daily Active Devices / 30 Day Active Devices: The ratio of Daily Active Devices to 30 Day (roughly monthly) Active Devices to display an engagement level of your active user base . This ratio reveals how much of your monthly active user base checks in on a daily basis.
 * Sessions per Active Device: The ratio of daily average Sessions to Daily Active Devices to understand the number of sessions an average active device plays each day.