Frisky Mongoose

According to a Foursquare developer’s Twitter feed (as reported by Mashable), the location-based app logged its 40 millionth check-in a few days ago.

As we told you at the end of March, the check-in app had just passed the 22 million check-in mark, meaning that in a little over a month, the check-in rate has almost doubled in size. What’s causing this massive growth? Word-of-mouth for one, and rumors concerning a possible buyout of the company haven’t hurt in drumming up some hype.

Foursquare isn’t the most dominant fish in the check-in app pond, at least not in terms of pure user numbers, but it is still the most readily known, when thinking of check-in apps. It will be interesting to see if this explosion in Foursquare’s growth continues into the future, even as comparable apps like MyTown continue to make progress of their own.

Related posts:

1. foursquare Hits 347,000 Check-ins in a Single Day
2. Checking-In With Check-Ins: Gowalla Still in Race, Foursquare Planning Choose Your Own Adventure?
3. MyTown Passes 1 Million Residents
4. Foursquare Cops Take Down Illegal Check-Ins
5. Foursquare Still on the Rise