Want your app to fly high on the iOS App Store or Android Market? You'd better make it sticky then. Both Apple and Google are thought to have tweaked their ranking algorithms to reward apps that have lots of active users, rather than just those with lots of downloads.
"We've been noticing changes in the 'Top Free' rankings for at least three days now," says Peter Farago of analytics firm Flurry. "From our point of view, Apple is absolutely considering more than just downloads, which we believe is the right direction to go to measure the true popularity of an app."
Apple's move follows changes made by Google in late March, which weren't noticed until US firm myYearbook spoke out about its Android app rocketing up from 63rd place in the Android "Top Free" chart to 11th.
"We believe the new ranking algorithm is now more complex, taking into account a measure of activity in the application and not simply new installs per day," wrote Geoff Cook earlier this month for Business Insider. "In particular, we believe the ranking now considers either Daily Active Users (DAU) or the ratio of Daily Active Users to Monthly Active Users, which is sometimes referred to as the 'sticky factor'."