New ask Hacker News story: Ask HN: What's Apple's transaction fee for apps like eTrade and Robinhood?

Ask HN: What's Apple's transaction fee for apps like eTrade and Robinhood?
2 by areoform | 0 comments on Hacker News.
Hey HN, We're thinking about starting a fintech company in the space, and we're wondering what the fees are like for users buying stocks etc through an application. Essentially, does Robinhood pay a 30% fee each and every time a user buys a stock? We've searched through Apple's website and guidelines - https://ift.tt/1vLbaKi, but we're unable to find any clear answers. Could you folks please help?