For some reason, Apple has now allowed third-party developers to create watch face for the Apple Watch. That might change sometime in the future if code found inside watchOS 4.3.1. is believed. A piece of code and comment found inside the NanoTimeKit framework points to support for third-party watch faces coming to Apple Watch in the future.
Apple Watch beta may hint at third-party faces later in 2018
Stray lines of code in new Apple operating systems sometimes provide hints as to what the company is working on, and the latest watchOS 4.3.1 beta may have leaked something exciting: support for third-party Apple Watch faces. As discovered by 9to5Mac, the NanoTimeKit developer framework contains a message reading, “This is where the 3rd party face