Wikipedia Android app metrics for October 2019
Daily average Monthly total Value Source
Total number of unique users 2 684 608 5 094 501 - in-app analytics
Average session time per user - - 1m 12s in-app analytics
Total number of unique users that have set multiple languages in the app - - 29.0% (1.3M out of 4.5M) in-app analytics
Total number of unique users that have been logged in to Wikipedia in the app - - 5.6% (253.4K out of 4.5M) in-app analytics
Total number of unique users who were at least on one article page 23.0% (617.1K out of 2.7M) 68.0% (3.5M out of 5.1M) - in-app analytics
Average session time of users on an article page - - 56s in-app analytics
Total number of unique users that have made an edit 650 11 749 - in-app analytics
Average session time of users that made an edit - - 5m 41s in-app analytics
Total number of unique users that have made an edit in “Suggested edits” 93 1 869 - mediawiki content db
Average session time of ”Suggested edits” users - - 12m 49s in-app analytics
Median time spent in “Suggested Edits” - - 2m 3s in-app analytics
Total number of unique users that have unlocked at least one “Suggested edits” feature - - 24.0% (3.36K out of 13.98K) Suggested Edits backend db
Total number of article description edits in the app (add, translate, edit) 730 155 438 - mediawiki content db
Total number of article description edits in the app via Suggested edits (add, translate) 169 35 918 - mediawiki content db
Total number of unique users in Explore feed 4 181 30 726 - in-app analytics
Average time spent in Explore feed - - 8m 29s in-app analytics

Note: there was a backend update that changed the API in such a way that inadvertently caused Suggested Edits to become inaccessible to users. The app was then updated to fix that issue. Keep this in mind with regards to Suggested Edits metrics.