According to the Pew Research Center, messaging apps (e.g. WhatsApp, Kik, iMessage) are especially popular among young adults. While 36 percent of all smartphone owners report using messaging apps, 49 percent of smartphone owners ages 18 to 29 use them. Among all smartphone owners 17 percent use apps that automatically delete sent messages (e.g. Snapchat, Wickr), but 41 percent of 18 to 29 year olds use this kind of app. Comparatively, just 11 percent of smartphone owners ages 30 to 49 and four percent of those 50+ use these automatically deleting apps.
The study also found fully 72 percent of adult Internet users are Facebook users, with the highest usage (82 percent) among 18 to 29 years old. In this age group only 37 percent use Pinterest and 32 percent use Twitter, but 55 percent use Instagram.