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Tumblr was launched
Tumblr was launched by David Carp. Marco Arment was the lead developer for 3 years. After 2 weeks the service had 75,000 users. -
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Tumblr history
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Official app was launched
The service launched its official iPhone app with its acquisition of Tumblerette -
Second time becoming app
Tumblr became available to BlackBerry smartphones on April 17, 2010 via a Mobelux application in the BlackBerry App World -
Financial investment
The company had a $800 million valuation in August 2011. The next month the company had raised 85 million. Tumblr was ranked #22 on the list of the 100 most valuable startups at an $800 million valuation. -
Obamas accomplishments with tumblr
On October 21, 2011, Tumblr became the first blogging platform to host President Obama's blog. -
iOS app
In June 2012, Tumblr released a new version of its iOS app, Tumblr 3.0 allowing support for Spotify, hi-res images and offline access -
Sponsors
In early June 2012, Tumblr featured its first major brand advertising campaign in conjunction with Adidas. -
13.4 million in The United States
According to comScore, Tumblr scored 13.4 million unique visitors in the United States alone in July 2011—up 218% from July 2010. -
The 77 million
Tumblr reached over 77 million blogs in October 13 2012
