We’ve just released our Android App Index data for the US. SimilarWeb’s proprietary ranking is calculated based on percentage of devices with the app installed, number of sessions per user, and average session duration.
While the top free Android apps remain relatively stable, some trends are worth a closer look. Although Snapchat doesn’t appear to have moved significantly over the past couple of months, it ranks 9 on the index. The app has been slumping down consistently since May, when it held the number 6 spot. Facebook Messenger has been steadily climbing up the index, ranking at number 6. The two apps have essentially exchanged places on the index over the past six months.