Snapchat’s user growth seems to have stalled toward the end of 2014, according to new Comscore numbers I obtained on Friday. As you can see from the below graph, Snapchat hit a peak around March 2014 and has slowly declined in unique visitors since then. I’ve reached out to Snapchat for comment and will update this if I hear back.
One caveat: Comscore only reports numbers from the 18 and over user group for legal reasons. Companies like Snapchat and Kik have big teen bases, so the Comscore numbers aren’t 100 percent representative. At the same time, given that Snapchat has saturated the teen audience at this point, the slow growth from the 18+ demographic is troubling.
The trend graph comes from a Comscore Mobile Metrix report that charts the number of monthly active users aged 18 and over in the United States. It looked at five messaging applications from October 2013 to October 2014 — Snapchat, Kik, WhatsApp, Line, and WeChat. It tracked “total unique app visitors,” but Comscore confirmed to me that’s the same as MAUs.
Comscore’s numbers are notoriously fickle and publishers frequently report more traffic than Comscore says they have, but in terms of overall growth trends the company is usually pretty accurate.

It’s not just Snapchat that has flatlined. Other messaging apps are seeing similar stagnation, with Kik hovering near the 15 to 16 million mark since April, WhatsApp at 7 million since March, and Line around 4 million since August. WeChat has been below 1 million since January.
So have we hit peak messaging app overload?
The Comscore graph also shows us where the most popular apps stack up against each other in the U.S. market. Snapchat is in the clear lead, despite flatlining. Kik is a not too distant second, which might surprise some. We also get a sense of WhatsApp’s American user base. The company hasn’t shared its U.S. metrics before, which led many to believe they were low.
But the fact that WhatsApp’s US monthly active users are this low — near Japanese-based Line — is new information.
This story has been updated since publishing to highlight the 18+ caveat higher in the post.