Key figures: Dennis Crowley (co-founder, CEO), Naveen Selvadurai (co-founder), Union Square Ventures (lead investor), Fred Wilson (USV partner and Foursquare board member)
Summary
Foursquare launched at South by Southwest Interactive in March 2009 and spent its first year growing among technology early-adopters. By 2010, as smartphone penetration accelerated — propelled partly by the iPhone 4 launch in June and Android 2.2 Froyo’s improvements — Foursquare’s user growth shifted from niche to mainstream.
The platform’s core mechanic was geolocation-based check-in: users opened the application, selected their physical location from a GPS-assisted list of nearby venues, and published that check-in to their Foursquare followers (and optionally to Twitter or Facebook). Check-ins accumulated points; the user with the most check-ins at any given venue within a 60-day window earned the title of “Mayor.” These gamification mechanics — badges, points, leaderboards, mayorships — distinguished Foursquare from purely informational mapping products and created social competition around physical-world activity.
Growth Metrics in 2010
At the start of 2010 Foursquare had approximately 1 million registered users. By August 2010 the company announced it had surpassed 3 million users and was recording roughly 2 million check-ins per day — roughly a fivefold increase in its user base across the year. On August 11, 2010, Foursquare announced it had crossed 100 million total check-ins since launch, a milestone the company marked with a blog post by co-founder Dennis Crowley. By December 2010 registered users had grown to approximately 5 million, with the platform operating in more than 100 countries.
In June 2010, Foursquare closed a Series B funding round of $20 million led by Union Square Ventures and Andreessen Horowitz, at a valuation reported at approximately $95 million. The funding followed an earlier $2.4 million seed round and a $1.35 million angel round. The June 2010 raise enabled Foursquare to hire engineering staff and expand internationally.
The Location-Data Business Model
Foursquare’s business model during this period was still forming, but commercial arrangements with merchants were already emerging. Restaurants, retailers, and brands offered check-in specials — discounts and rewards unlocked by checking in at their venue — creating a direct commercial link between Foursquare activity and consumer foot traffic. Starbucks launched a Foursquare mayorship reward programme in 2010 offering discounts to mayors at participating locations. Bravo (NBC Universal) partnered with Foursquare to offer TV show badges tied to check-ins at related venues.
These arrangements demonstrated that location check-in data had direct commercial value: a user announcing their physical presence at a business was a higher-value signal than an online advertisement impression. Foursquare was building a dataset of voluntary location disclosures linked to real consumer identity — the foundation of what would later be called the location intelligence or geo-data industry.
Twitter’s social media growth in 2010 ran in parallel with Foursquare: many Foursquare users cross-posted check-ins to Twitter, blurring the boundary between the two platforms and amplifying both. Instagram’s October 2010 launch added photo-sharing as a third layer of mobile social expression alongside status updates and location check-ins, illustrating how 2010 was the year the mobile-social stack was assembled.
Competition and Alternatives
Foursquare’s rapid growth attracted direct competition. Google Latitude, launched in 2009, offered passive location-sharing but lacked gamification. Facebook launched Facebook Places in August 2010 — the same month as Foursquare’s 100-million-check-in milestone — integrating check-ins directly into the dominant social network. Yelp had already introduced check-ins tied to reviews. Gowalla, a direct Foursquare competitor funded by Accel Partners, competed in the check-in space throughout 2010 before being acquired by Facebook in 2011.
Facebook Places was the most significant threat: it gave Foursquare’s entire user base an alternative with zero additional sign-up friction, since Facebook accounts were already ubiquitous. Foursquare’s response was to double down on the discovery and recommendation layer — eventually pivoting the product in 2014 to separate the social check-in function (retained in a spin-off app called Swarm) from a local discovery application (the new Foursquare), built on the accumulated dataset of hundreds of millions of voluntary check-ins.
Legacy
The Foursquare model of 2010 established several durable industry patterns: that mobile users would voluntarily disclose location in exchange for social reward; that check-in data at sufficient scale constituted a valuable commercial dataset for business intelligence; and that gamification could drive sustained engagement in non-game applications. The location intelligence sector that emerged from these foundations became a multi-billion-dollar industry, with companies including Foursquare (rebranded as Foursquare Data) providing location-attribution and analytics services to advertisers, retailers, and research organisations.
See also: iPhone 4 Launch · Android 2.2 Froyo · Instagram Launch · Twitter Social Media Growth 2010