[denzil_correa]

> I've run the numbers on products like this before. In order to absorb transaction fees, build your own product, and support it, fees need to be in the 10-15% range.

Apple does charge 10-15% for Spotify like apps viz. apps that sell subscriptions for more than 1 year.

https://developer.apple.com/app-store/subscriptions/whats-ne...

   After a subscriber accumulates one year of paid service,    
   your revenue increases to 85% of the subscription price, 
   minus applicable taxes. All current subscriptions are 
   eligible.

[mcphage]

That's a brand new rule, just going into effect.

[denzil_correa]

So is Spotify's letter.