Apple intends to provide a single toolkit for developing applications that will work on iPhone, iPad and MacOS by 2021. about it . writes Bloomberg

More. The project to unify the development tools is called Marzipan.

The first results of Marzipan were shown in the latest version of macOS, where iOS-adapted Stocks, Apple News and Voice Memos appeared. They were written by Apple employees.
In 2019, third-party developers will be able to bring iPad apps to the Mac.
In 2020, the iPhone will be added to the transfer sources.
This is not to say that every iOS app will immediately run on a Mac. Developers will have to adapt apps and submit them to different stores. However, now they don't have to write the same code twice. This will also allow you to bring applications to the Mac from those developers who have decided not to make clients for Apple computers.
By 2021, developers will be allowed to combine the iPhone, iPad and Mac versions of the application into one file. If this happens, then the App Store and Mac App Store will effectively merge.

Context. The new toolkit is important for Apple, as it gives developers the opportunity to earn more, and Apple itself to adapt its own applications to new platforms.

Apple plans to introduce a video streaming service in March, as well as a paid news subscription service.
This will not only require additional development, but will also increase the revenue from services, which is a key goal for Apple.

Alexander Amzin

Apple will combine application development for iPhone, iPad and Mac