App makers bridled at the 30 percent commission, which has drawn scrutiny from regulators looking into antitrust claims
Apple has faced ongoing scrutiny from government regulators and criticism from developers about the percentage of revenue it takes for App Store purchases
Apple removed Epic's titles from its App Store after the game maker violated the iPhone maker's in-app payment rules
Google employees can't access test versions of iPhone apps they're making, or use internal apps related to transportation scheduling and food
The situation stemmed from a dispute after Facebook violated Apple's rules by publicly distributing a research app
The ultimate goal of the multistep initiative, code-named "Marzipan," is by 2021 to help developers build an app once and have it work on the iPhone, iPad and Mac computers
Purchases from the App Store topped $3 billion in December