It's also on trend in terms of the broader industry - Google made it possible to run Android apps on its Chrome OS desktop operating system earlier this year, and Windows has had a single OS for its tablet/hybrid and more traditional desktop devices for a while now.
This is big news for a couple of reasons, the first is because while the iOS App Store has flourished the same can not be said about the Mac App Store which isn't as popular with developers.
It's not clear exactly how Apple would implement such a plan, as Mac apps are often developed using different tools and programming languages than their iOS counterparts. In a similar way, Apple could resurrect the arguably dying Mac App Store and bring future releases to a broader audience. The iOS version is regularly updated while the Mac version lags behind and is considered substandard by most users.
But the latest iOS devices powered by Apple's A-series ARM processors have achieved CPU and GPU performance parity with some Intel Macs, conceivably enabling the company's tablets and phones to run desktop/laptop-caliber apps without stumbling. That's a lot more work. Apple's plans are still fluid, the people said, so the implementation could change or the project could still be canceled. As such, we could see this rumored at Apple's 2018 Worldwide Developers Conference - where we always see the next versions of iOS and macOS.
The idea of a universal platform is nothing new.
The single app system means applications will be able to work with an iOS device and on a Mac computer, sources told Bloomberg. The secret project is codenamed "Marzipan" and could be announced at WWDC 2018.
Bringing parity to the apps across both platforms will surely be a boost for developers. Apple has previously shied away from encouraging one-size-fit-all apps as a lowest-common-denominator solution. Chief executive officer Tim Cook has resisted doing so, arguing that merging iOS and macOS would degrade the experience.