Spotify claims Apple has rejected an update to the popular music streaming app that would inform users about purchase methods outside of the Apple ecosystem.
The update would have told Spotify users that they could pay through Spotify's own website rather than through Apple's App Store, which charges a commission to app developers whenever a user makes a purchase.
The music streaming service had submitted its original app update to Apple on March 5, just after the European Commission (EC) found that the iPhone maker had to allow music apps to offer users payment options outside of the App Store.
Apple then introduced its so-called entitlement program for music streaming services, which added some new rules to the App Store game.
Spotify says it wasn't informed directly by Apple about the entitlement program.
Having not heard back from Apple on whether its app update would be pushed through, Spotify said it then decided to submit a new update yesterday which merely informed users they could purchase a subscription through its own website, this time with no link.
Apple then promptly rejected this app update, according to Spotify, saying it would need to pay the 27 percent commission fee mentioned in the entitlement program.
"Apple has once again defied the European Commission's decision, rejecting our update for attempting to communicate with customers about our prices unless we pay Apple a new tax," a Spotify spokesperson stated to the media.
The app update kerfuffle isn't the first instance of bad blood between Apple and Spotify.