An anonymous reader shares a report: Spotify Technology is developing a new version of its free music service, the first big product change since the streaming company went public last week, according to people familiar with the matter. The company is tweaking the free service to make it easier to use, especially for customers on mobile phones, said the people. An announcement is expected within a couple weeks. Spotify needs to attract large numbers of new listeners to satisfy investors who value the newly public company based on user growth. The free service generates customers that the company can steer into its paid offerings. The paid version accounts for less than half of Spotify's customer base, but generated about 90 percent of its 4.09 billion euros in 2017 revenue. [...] With the updated service, free mobile listeners will be able to access playlists more quickly and have more control over what songs they hear on top playlists, mimicking Spotify's ad-free subscription product. The basic package is $9.99 a month.