Apple will reject watch face replacement apps
Hopefully you like one the Apple Watch’s built-in watch faces, because Apple isn’t about to let you replace them. In an update to its App Store guidelines today, spotted by 9to5Mac, Apple says that it will reject all Watch apps with the primary purpose of telling the time. Apple doesn’t currently provide a way to install third-party watch faces, though using an app that just told the time could have served as a workaround. It wouldn’t, by any means, be a good work around — it could lead to battery life issues and general performance problems — so it’s not entirely surprising that Apple is prohibiting them.
Source:: The Verge