Two Apps, TuneIn and iHeart Radio, Put Radio Online

The apps, iHeartRadio and TuneIn, are aggregators — conduits for thousands of online radio streams. With a few taps on a smartphone, a listener can dart among a pop station in New York, gospel in Atlanta and talk almost anywhere.

Both have quickly amassed big audiences. TuneIn, which offers 70,000 streams from around the world, announced on Monday that it has 40 million monthly users. IHeartRadio, owned by the broadcasting giant Clear Channel Communications, has been downloaded 95 million times and has attracted more than 12 million registered users.

For broadcasters, these aggregators can help reach audiences in the growing but increasingly fragmented world of online radio, which can mean anything from a customized playlist on Pandora or Spotify to an iTunes stream.

“Our mission is about getting our content to as wide an audience as possible,” said Anil Dewan, the director of interactive media at KCRW, a public station in Santa Monica, Calif., whose digital outlets include TuneIn, iHeartRadio, iTunes, Spotify and an app of its own.

At the same time, many broadcasters say they worry about the rising costs of online royalties; the plans of the companies behind the apps; and the possibility of being lost within the aggregators, like needles in enormous digital haystacks.

Both aggregators let users find stations by typing a city, genre or station name into their search bars. TuneIn also points listeners to any station currently playing a given artist or song; iHeartRadio has an extensive custom-radio function, modeled after Pandora.

But as businesses they represent two poles of media. TuneIn, in Palo Alto, Calif., which started as a simple directory, transformed itself into an app purveyor two years ago, with streams that include not only radio and podcasts, but also emergency scanner signals. Recently the company raised $16 million in new investment, bringing its total financing to $22 million.

Clear Channel, which owns 850 stations, added a custom radio feature to iHeartRadio last September, making it a Pandora competitor as well as a platform for almost 2,000 stations. Hundreds of those belong to direct competitors, a few of which, including Cumulus Media and Univision, have made exclusive deals.

The apps are going head-to-head in the marketplace as consumers grow accustomed to tapping on one app for all their radio needs, and manufacturers of everything from televisions to cars begin to incorporate suites of streaming apps.

“They are both competing to be one-stop shopping in the Wild West of Internet radio,” said Paul Heine, a senior editor at the trade publication Inside Radio. “They both want to be a destination that helps consumers navigate radio’s infinite dial online.”

For now only a fraction of the radio audience is online; John Hogan, chief executive of Clear Channel Media and Entertainment, the company’s radio and online division, said that 98 percent of listening to his company’s stations is still on its terrestrial signals. But it is growing quickly. According to Triton Media, a company that measures Internet radio audiences, Clear Channel’s online audience has risen 117 percent in the last year.

“What will end up happening is that every radio station stream is going to become a secondary station, if not a primary one,” said Jackie Paulus, director of marketing and digital innovation for WGN, a news and talk station in Chicago owned by the Tribune Company.

But making money through online radio remains a puzzle, largely because of its royalty structure.

While terrestrial broadcasters pay music publishers negotiated rates, no matter how many people are listening, online and satellite radio operators pay publishers — as well as labels and artists — for each new listener. Pandora, while enjoying rapid growth, still pays more than half its revenue in music royalties.