https://www.theverge.com/2018/2/4/16971436/apple-music-surpass-spotify-us-subscribers

Earlier this year, Spotify announced that it had 70 million paying subscribers, reaffirming its place as the number one streaming service in the world, with Apple Music a distant second with 30 million as of September last year. In a new report in The Wall Street Journal, it appears that Apple is gaining subscribers at a higher rate in the United States, and will surpass Spotify for the number one spot this summer.

Globally, Spotify remains ahead, but Apple is growing at a higher rate in the US — five percent a month verses Spotify’s two percent per month. The US is the largest market for music streaming with 30 million paying subscribers, and Apple’s growth there means that it’s becoming a serious challenger to Spotify. Globally, Apple tells the WSJ that it now has 36 million subscribers.