Developers who want to sell applications in any of Apple’s App Stores first need to submit their software to Apple for review, a process in which actual humans examine apps to ensure they comply with Apple’s guidelines.
One of the problems with this method is that it takes time for apps to move through the opaque review process, meaning users can potentially be stuck with bugs for a few days if something goes wrong with an update, even if the developer submits a new build to Apple as soon as the bug is discovered.
