This post originally said 44 million people tried Apple Music, but that neglected to account for two different sets of data ComScore provided, one of which counted users ages 13 and up and and another that only counted actions of users age 18 and higher. ComScore said they could only say that at least 37.1 million people accessed the core Music app on Apple devices in July based on its data. This story has been updated to reflect that.

Apple Inc.'s AAPL, +1.57% new music service reached the ears of as many as 37.1 million smartphone owners in the United States during its first month, making the tech company's music app one of the top 15 smartphone apps in the nation, ComScore reported Thursday. The analytics company's audience-measurement tool looked at iOS and Android users in the U.S. and found that 24.1% accessed the core Apple music app in July, ranking it No. 14 even though the service isn't available on Google Inc.'s GOOGL, +2.07% Android operating system yet. That ranking put the app just behind Twitter Inc. TWTR, +7.09% and ahead of Snapchat, and made it the second most popular app devoted solely to music, behind Pandora Radio p, which reached 43.9% of users of both major mobile operating systems. Apple Music launched June 30 and offers a streaming-music service, which has grown in popularity over the download-focused iTunes system Apple made popular, as well as a global radio station, though the Music app on iOS offers more service than just Apple Music.