Streaming music service iHeartRadio has hit 60 million registered users, putting it among the biggest players in the market.
iHeartRadio launched its Pandora-like streaming service in September 2011 -- it had previously just broadcast radio online -- and since then, has seen consistent user growth.
Backed by radio and advertising giant iHeartMedia, formerly known as Clear Channel Communications, that growth was thanks in part to letting listeners stream music on mobile devices without registering first.
iHeartMedia announced the numbers on Friday.
iHeartRadio registered users |Create infographics
Pandora remains in the lead with more than 250 million registered users, 76.5 million of whom are termed as "active listeners." Spotify is closer to 60 million users, 12.5 million of whom are subscribers.