The iPhone's Night Shift mode, designed to cut the impact of harmful blue light on users' sleeping patterns, grabbed headlines earlier this week when Apple revealed it as the key feature of the latest update to iOS 9.
Now, a third-party developer behind an app offering similar features has asked Apple if its tool can be admitted to the App Store, after Apple asked the company to withdraw it last year.
Flux, which allows users to switch from blue light to less harmful yellow light while using their iPhone and iPads in the dark, was only ever available via a developer website, but was removed at Apple’s request.
Now, with Apple revealing its own version of the app, Flux says it should be allowed back in and that developers should be given access to the tools behind Night Shift to help make it even better.
“Today we call on Apple to allow us to release Flux on iOS, to open up access to the features announced this week, and to support our goal of furthering research in sleep and chronobiology,” it said in an official blog post.
Flux is already available on Macs. But if it were ever to reach iPhones and iPads it’s likely that Apple’s own Night Shift mode would leave it in the shade, with users opting for the built–in app rather than downloading a third-party one.