Why Are Apps Adding Social Features To Increase User Engagement?

You’ve finished the run, taken the watch off and left the trainers by the door, yet somehow your thumb is already opening Strava again. You’re not logging another activity or checking your pace;  you just want to see whether anyone you know went further or faster and on a good day, embarrassingly slower.

That little habit of going back shows a lot about how apps are changing – Spotify, Strava and Duolingo were all built around a specific purpose, but they’ve added ways for users to follow friends, share activity, compete, comment and see what other people are doing. The music still plays, the run still gets tracked and the language lesson still gets done, but there are now many more reasons to open the app that have little to do with the main feature itself.

The Core Product Isn’t Always Enough

A useful app doesn’t instantly become part of someone’s daily routine because once you’ve done whatever brought you there, there may be little reason to stick around. You track the run, close the app and get on with your day; unless Strava has managed to convince you that someone else’s 5km deserves your immediate attention.

Adding social features gives users something else to look at and interact with between those moments of actual use. Strava has feeds, comments, Kudos, clubs and challenges, while Duolingo has friends, leaderboards and shared streaks. Spotify has also expanded its social features, with Messages now allowing people to see what friends and family are listening to and invite them into shared Jam sessions, according to Spotify.

The original purpose of the app hasn’t disappeared, but it’s no longer the only thing bringing people back – a friend’s comment, a league position or a new playlist all create another reason to open an app.

Users Start Adding Value

As people begin interacting with one another inside an app, some of what makes the experience engaging starts coming from the users themselves rather than the app. Spotify has been building more of this interaction into its listening experience, and in January 2026 the company said almost 40 million users had sent nearly 340 million messages since Messages launched. Spotify also reported that daily active users of its Jam feature had more than doubled year over year.

Strava is kind of similar, with someone’s run becoming something that friends can react to, comment on or give Kudos to instead of remaining a collection of numbers on a screen. The company describes Kudos as a way for athletes to congratulate one another on activities, achievements and challenges.

Duolingo’s concept is almost the same when it comes to the daily effort of learning a language. Its Friend Streak feature lets users to share a streak with up to five friends, and Duolingo says learners with at least one shared streak are 22% more likely to complete their daily lesson.

These examples all show why the social element can be useful instead of just giving people somewhere to chat. The companies aren’t responsible for creating every interaction or every reason to return because users can provide some of that activity themselves.

Social Connections Give People Something To Come Back To

Once an app has a network of people around it, leaving it can definitely become a little harder. If you’re using a service just because it performs a useful function, moving to another app isn’t exactly difficult. Your running data, playlists or language lessons may be valuable, but the app itself is still replaceable.

Having friends, followers, shared streaks and ongoing conversations creates something that isn’t as easy to leave behind. You’re also leaving behind the people you’ve connected with on the app, which gives you another reason to stick with it rather than just moving to something else.

That doesn’t mean companies are deliberately trying to lock users in, but social connections give people another reason to stay; with Duolingo’s own data supporting this idea.

The App Becomes More Than What You Downloaded It For

Spotify, Strava and Duolingo aren’t trying to become Instagram, and they don’t need endless feeds of unrelated content to keep people interested. Their social features work because they are connected to something users were already there to do.

For the companies behind them, that creates another way to keep people involved with the product without changing its main purpose. A run can become something friends react to, a playlist can become something people discover together and a language lesson can become a shared commitment.

The app still does the job you downloaded it for, but the people using it alongside you can now become part of what keeps you coming back.