Flux-iOS-BetaF.lux, a popular app for the Mac that allows users to adjust the color of their screen based on the time of day, yesterday expanded to iOS with a beta app, but as of today, the app is no longer available.

Because iOS does not have the necessary documented APIs to allow f.lux to function, f.lux was skirting the App Store with private APIs and asking users to install its iOS app through Xcode, using a technique called side-loading. Apple has now informed f.lux that asking people to side-load apps onto their iOS devices violates the Developer Program Agreement, so f.lux can no longer be installed on iOS devices using Xcode.

Apple has contacted us to say that the f.lux for iOS download (previously available on this page) is in violation of the Developer Program Agreement, so this method of install is no longer available.

We understood that the new Xcode signing was designed to allow such use, but Apple has indicated that this should not continue.

For those unfamiliar with f.lux, it's an app that adjusts the blue light of a screen based on the time of day to avoid interfering with the body's circadian rhythm. During the day, f.lux mimics natural daylight, but at as the sun sets, it cuts down on the amount of blue light and makes the screen more yellow, which is said to encourage better sleep.

F.lux is a popular Mac app that's been downloaded 15 million times, but with side-loading no longer available, f.lux for iOS is non-existant. F.lux's developers are urging customers who want f.lux for iOS to send feedback to Apple, as the company would need new documented APIs to introduce the app through official channels.

Tag: F.lux

Top Rated Comments

Jamiet361 Avatar
69 months ago
Godammit. Stop making me hate you, Apple.
Score: 26 Votes (Like | Disagree)
ErikGrim Avatar
69 months ago
Hopefully the popularity of this sends a message to Apple and they'll add something similar in an upcoming iOS. This is the kind of low hanging fruit that can be picked off once a platform is mature.
Score: 17 Votes (Like | Disagree)
Pakaku Avatar
69 months ago
This is why I keep arguing that iOS isn't a true operating system in its current state, and in Apple's current mindset.

On OSX, there's (hopefully) no fear of f.lux and other apps like it somehow not being allowed to run.
Score: 13 Votes (Like | Disagree)
b.inazawa-fan Avatar
69 months ago
Or they could open source f.lux and Apple would be just fine with it! The way they were doing, tricking Xcode into copying a pre-compiled binary was shady, this was the obvious outcome.
Score: 13 Votes (Like | Disagree)
DogHouseDub Avatar
69 months ago
We need a true NIGHT MODE. All text becomes white, backgrounds become black, photos remain as they were.
Score: 13 Votes (Like | Disagree)
nepalisherpa Avatar
69 months ago
It's because of times like this, I feel like switching to Android. Seriously Apple, it's called "side-loading" for a reason. You are not responsible for it. Quit acting like a baby!
Score: 10 Votes (Like | Disagree)

Top Stories

jon prosser imac 2021colors

Prosser: 2021 iMac to Come in Five Colors, Apple Silicon Mac Pro to Resemble 'Stacked' Mac Minis

Wednesday February 24, 2021 7:26 am PST by
Hit-and-miss leaker Jon Prosser has today alleged that the upcoming 2021 iMac models will offer five color options, mirroring the colors of the fourth-generation iPad Air, and revealed a number of additional details about the Mac Pro with Apple Silicon. In a new video on YouTube channel FrontPageTech, Prosser explained that the redesigned iMacs will come featuring options for Silver, Space ...
2021 mbp sd slot feature2

Kuo: New MacBook Pro Models With HDMI Port and SD Card Reader to Launch Later This Year

Monday February 22, 2021 8:52 pm PST by
Apple plans to release two new MacBook Pro models equipped with an HDMI port and SD card reader in the second half of 2021, according to analyst Ming-Chi Kuo, who outlined his expectations in a research note obtained by MacRumors. The return of an SD card reader was first reported by Bloomberg's Mark Gurman last month. "We predict that Apple's two new MacBook Pro models in 2H21 will have...
m1 mac mini

M1 Mac Users Report Excessive SSD Wear

Tuesday February 23, 2021 7:07 am PST by
Over the past week, some M1 Mac users have been reporting alarming SSD health readings, suggesting that these devices are writing extraordinary amounts of data to their drives (via iMore). Across Twitter and the MacRumors forums, users are reporting that M1 Macs are experiencing extremely high drive writes over a short space of time. In what appear to be the most severe cases, M1 Macs are sai...
iphone 12 pro display video

BOE Rumored to Supply iPhone 13 Display Panels After iPhone 12 Failures

Monday February 22, 2021 9:54 am PST by
Display manufacturer BOE will be one of the main suppliers of OLED panels for iPhone 13 models, according to a new report today from Taiwan's Economic Daily News. BOE is said to be working with touch panel manufacturer General Interface Solution (GIS), part of the Hon Hai Group to develop OLED panels. Multiple iPhone 12 rumors suggested that BOE would supply some panels for the devices,...
flat mbp 14 inch feature yellow

Redesigned 14-Inch MacBook Pro Expected to Feature Brighter Mini-LED Display With Slimmer Bezels and More

Thursday February 25, 2021 7:48 am PST by
Apple plans to unveil new 14-inch and 16-inch MacBook Pro models with Mini-LED-backlit displays in the second half of this year, according to industry sources cited by Taiwanese supply chain publication DigiTimes. The report claims that Radiant Opto-Electronics will be the exclusive supplier of the Mini-LED backlight units, while Quanta Computer is said to be tasked with final assembly of the...
anker magsafe powercore battery pack

Anker Releases MagSafe-Compatible Battery Pack for iPhone 12 Lineup

Tuesday February 23, 2021 7:49 am PST by
Following rumors that Apple is working on a MagSafe battery pack for iPhone 12 models, popular accessory maker Anker has beaten Apple to the punch with the release of its PowerCore Magnetic 5K Wireless Power Bank. First previewed at CES 2021, the PowerCore battery pack magnetically attaches to the back of any iPhone 12 model and provides 5W of wireless charging. With a 5,000 mAh capacity,...
iPad Pro Mini LED

New iPad Pro and MacBook Models With Mini-LED Displays Again Rumored to Launch This Year

Monday February 22, 2021 9:32 pm PST by
Taiwanese company Ennostar will begin production of Mini-LED backlight units for an upcoming 12.9-inch iPad Pro in the late first quarter or second quarter of this year, according to industry sources cited by DigiTimes. Ennostar is a holding company that was jointly established in January 2021 by LED-related manufacturers Epistar and Lextar Electronics. Apple is expected to unveil the new ...
First Look Big Sur Feature2

Apple Releases macOS Big Sur 11.2.2 to Prevent MacBooks From Being Damaged by Third-Party Non-Compliant Docks

Thursday February 25, 2021 10:07 am PST by
Apple today released macOS Big Sur 11.2.2, the fourth update to the macOS Big Sur operating system that launched in November. macOS Big Sur 11.2.2 comes two weeks after the release of macOS Big Sur 11.2.1, a bug fix update. The new ‌‌‌‌macOS Big Sur‌‌‌ 11.2.2‌ update can be downloaded for free on all eligible Macs using the Software Update section of System Preferences....
steam apple logo

Valve Ordered to Give Apple Information on 436 Steam Games As Part of Epic Games Legal Case

Thursday February 25, 2021 1:50 am PST by
Valve, the makers behind popular game distribution platform Steam, will be forced to hand over aggregate historical sales, price, and other information on 436 games hosted on the store to Apple, as part of the Apple vs. Epic Games antitrust case. As reported in a paywalled report by Law360, during a virtual discovery hearing on Wednesday, U.S. Magistrate Judge Thomas S. Hixson ordered that...
scott forstall original iphone

Epic Games 'Attempting to Locate' Former iOS Chief Scott Forstall to Testify in Ongoing Legal Battle with Apple

Tuesday February 23, 2021 4:22 am PST by
As part of its ongoing legal battle, Epic Games is now seeking testimony from Apple's former iOS software chief, Scott Forstall. Forstall left Apple in 2013, in what was widely reported at the time to have been a forced exit, largely because of the botched early launch of Apple Maps. Since then, Forstall has kept a very low profile and has only made a few media appearances in the past few...