Getting your questions ready
Getting your questions ready
All 10 questions with answers and explanations. Play this daily
Q 01In mobile analytics, what term describes the share of users who uninstall or stop using an app soon after installing?
App churn
App churn. It is the flip side of retention: if 20% of users churn in a period, the other 80% are retained.
Q 02Which game sent millions walking outdoors to catch virtual creatures on their phones?
Pokémon Go
Pokémon Go. It was downloaded a record 130 million times in its first month, but by mid-September 2016 it had lost 79 percent of its paying players.
Q 03Which mobile app category has the highest uninstall rate, with over half deleted within 30 days?
Games and casual entertainment apps
AppsFlyer's uninstall benchmarks put gaming at the top end of every vertical: over 1 in 2 gaming apps are uninstalled within 30 days, because users try new titles on impulse and drop the ones that don't hook them.
Q 04Why do many apps keep draining a phone's battery after you switch away from them?
Background processes continuously running despite app closure
Background processes continuously running despite app closure. Syncing, location requests and wake-ups keep using power, so Android limits background apps to a few location updates an hour.
Q 05Which sport's season drives the ESPN Fantasy app from 2.6 million users in June to 10.8 million in September?
Football (NFL)
ESPN's standalone fantasy app drew 2.6 million users in June 2025 but 10.8 million the previous September, when the NFL season starts. More than 13 million people played ESPN Fantasy Football in 2024.
Q 06What reason did Dong Nguyen give for pulling Flappy Bird while it earned $50,000 a day?
Guilt over how addictive it was
Guilt over how addictive it was. After he pulled it, phones with the game still installed went up on eBay for $1,499 and more, until eBay removed the listings.
Q 07Which company pulled 'I Am Rich', a $999.99 app that only showed a glowing red gem, about a day after launch?
Apple
Apple. Eight people had bought the app, and at least one of them said the purchase was an accident.
Q 08Why did Apple initially reject Yo, an app that only sent friends the word 'Yo'?
Being too simple
Being too simple. Investors saw more in it: Yo raised $1 million soon after launch and was valued at between $5 million and $10 million.
Q 09Which Hollywood mogul founded Quibi, the short-video app that folded six months after launch?
Jeffrey Katzenberg
Jeffrey Katzenberg. Quibi raised over $1.6 billion from investors, and he blamed the coronavirus pandemic for its failure.
Q 10Which company reportedly held talks to buy Clubhouse for $4bn in early 2021?
The talks went nowhere, but the buzz spawned copycats in Twitter Spaces and Spotify Greenroom, and Clubhouse's own weekly users fell 21% in three weeks that spring.