The European Commission has fined Apple over €1.8 billion for abusing its dominant position on the market for the distribution of music streaming apps to iPhone and iPad users (‘iOS users’) through its App Store. In particular, the Commission found that Apple applied restrictions on app developers preventing them from informing iOS users about alternative and cheaper music subscription services available outside of the app (‘anti-steering provisions’). This is illegal under EU antitrust rules.
The issue here is that Apple only allows devs to let users sign up for their service through Apple. Apple also demands 30% of the subscription fee when doing this. They don’t allow a developer to have a button in the app that allows to sign up through their website, or to mention that you can sign up through a website.
“Reader” apps like Spotify can have a link to sign up on their website. There are more rules around than there maybe should be, but it’s allowed, and Apple’s letter says Spotify chooses not to do it.