Apple has the opportunity to work on the iOS apps to make them a little more functional - and have that work come across to macOS at the same time. If you're expecting the new Mac apps to just be mirrors of their iOS counterparts, you might be pleasantly surprised. Now, with the help of Marzipan – the technology Apple started rolling out in macOS Mojave that lets iOS apps run on macOS – Apple should be able to bring those iOS apps over to the Mac, replacing the most prominent functionality of iTunes.