Apple Approves 'FlexBright' iOS App That Adjusts Display Temperature [Update: Pulled]

FlexBright, an app that allows the user to manually adjust the display temperature of an iOS device, was recently approved by Apple, marking one of the first third-party apps that's able to function in a manner similar to the company's own Night Shift mode, set to be released in iOS 9.3. The only catch is it must be triggered somewhat manually in response to a notification, rather than continuously, like Night Shift or f.lux.

Currently available for download in the App Store, FlexBright was created by Intelligent Apps, who worked with Apple to find a way to implement blue light reduction capabilities. The app includes controls that allow it to both dim an iPhone or iPad's display and adjust the display temperature to cut down on blue light exposure.

FlexBright runs in the background on an iPhone or iPad, sending notifications to prompt users to change the brightness or the blue level on the display at sundown or at user-specified times. After tapping on the alert, FlexBright launches and changes the brightness or blue light filter to a preset value, which can introduce a lot more yellow light than Apple's own Night Shift mode in iOS 9.3. FlexBright's screen adjustments work throughout the iOS operating system, in third-party apps and on the Home screen.

flexbright
According to one of the developers behind FlexBright, using this notification system was the only way Apple would allow the app to change brightness or blue light while running in the background. The app does not use private APIs to change the screen temperature, instead utilizing a "native objective-c library that filters the blue light from the iOS screen."

In the app, which has an admittedly confusing interface, there are toggles to turn the screen yellower on demand and adjust alert times for the notifications that will allow it to work on an almost-automatic basis. There are also alerts for adjusting brightness and there's a toggle for a "Dark Mode" that turns the screen black and white, similar to (but not identical to) the Grayscale mode under Accessibility settings.

FlexBright is notable because it offers display temperature adjustments for devices that are not compatible with Apple's Night Shift mode. FlexBright is available on devices running iOS 7 or iOS 8, while Night Shift is limited to devices running iOS 9.3, and it's also available on non-64-bit devices like the iPhone 5 and earlier.

compare

Left Photo: Coolest, Center Photo: About half way, Right Photo: Warmest

Apple's decision to allow FlexBright into the app store is interesting because just a few months ago, there was a controversy over f.lux, a similar app. F.lux is a well-known blue light reduction app for the Mac that allows users to adjust their screen temperature, shifting it towards the warmer yellow spectrum in the evenings. In November, the developers behind f.lux launched an iOS version that was side-loaded on devices using Xcode due to its private APIs, something Apple quickly said was not allowed. F.lux's developers have said that it is not possible to introduce a f.lux app for iOS using Apple's existing tools and has asked the company to "open up access" to Night Shift features.

FlexBright has a primitive interface, and current color schemes seem yellower than Apple's implementation of Night Shift, but it opens up an interesting option, especially for those who have devices that won't be supported by Night Shift. FlexBright is available from the iOS App Store for $2.99. [Direct Link]

Update: FlexBright has been removed from the App Store. No explanation for the removal has been provided by Apple at this time.

Top Rated Comments

Chrjy Avatar
86 months ago
That is one confused UI design right there :eek:
Score: 18 Votes (Like | Disagree)
Norbs12 Avatar
86 months ago
How do they let this slip by but something of actual value like f.lux get's blocked...
Score: 16 Votes (Like | Disagree)
adamneer Avatar
86 months ago
Whoever designed that logo must have thought they were a pharmaceutical company.
Score: 15 Votes (Like | Disagree)
djang0 Avatar
86 months ago
what the f.lux?
Score: 15 Votes (Like | Disagree)
Burger Thing Avatar
86 months ago
Have a healthy lifestyle with regular sleep patterns and do some exercise - and you will fall asleep with no problems no matter what your frikkin' display color temperature is.
Score: 13 Votes (Like | Disagree)
mozumder Avatar
86 months ago
These color-temperature apps are completely useless to help sleep patterns. I tried Flux for a year.. complete waste.

The only thing it did was change everything to orange.
Score: 12 Votes (Like | Disagree)

Popular Stories

iOS 16

Apple Releases iOS 16.0.2 With Bug Fixes for iPhone 14 Pro Camera Vibration, Copy/Paste Issue and More

Thursday September 22, 2022 1:04 pm PDT by
Apple today released iOS 16.0.2, addressing a number of bugs that iPhone 14 owners have been experiencing since the new devices launched. iOS 16.0.2 comes two weeks after the launch of iOS 16, and it follows iOS 16.0.1, an update made available to iPhone 14 owners on launch day. The update is available for all iPhones that are capable of running iOS 16. The iOS 16.0.2 update can be...
maxresdefault

Video Review: Four Days With the iPhone 14 Pro Max

Wednesday September 21, 2022 7:49 am PDT by
Apple on Friday released the new iPhone 14 models, and MacRumors videographer Dan picked one up on launch day. He's been using the iPhone 14 Pro Max non-stop since it came out, and over on the MacRumors YouTube channel, has shared his initial thoughts on the day-to-day experience with the latest iPhone. Subscribe to the MacRumors YouTube channel for more videos. Dan's mini review highlights...
iPad Pro Big Ol Logo

Five Features Rumored for the New iPad Pro Expected Next Month

Wednesday September 21, 2022 1:36 am PDT by
Rumors suggest Apple will announce new 11-inch and 12.9-inch iPad Pro models as soon as next month. The new iPads will be the first update to the iPad Pro series since April 2021 and will be an overall incremental upgrade that brings new capabilities and functionality to the highest-end iPad. According to reports, Apple is planning an event for October to announce the new iPad Pro models, a...
ios 16 lock screen feature

Some iOS 16 Users Complain About Slow Spotlight Search and Battery Drain

Wednesday September 21, 2022 4:25 am PDT by
It's been nine days since Apple released iOS 16 to the public, bringing major changes to the Lock Screen, Messages, Maps, and more. In the days following the release, some users have encountered several issues on their iPhones, ranging from slow system performance to battery drain. In the past few days, iPhone 14 Pro users have shared specific bugs related to Apple's latest high-end iPhones, ...
Dynamic Island For Android Users Feature

Android App Copying iPhone 14 Pro's Dynamic Island Released on Play Store

Thursday September 22, 2022 7:57 am PDT by
A copycat version of the iPhone 14 Pro's Dynamic Island has arrived on Android's Google Play Store in the form of an app called "dynamicSpot." The app, still in beta, offers customers several different experiences at the top of their smartphones. In its current form, dynamicSpot offers playback control for songs, timers, battery status, and more features coming soon, according to the app's...
facebook meta

Meta Sued Over Tracking iPhone Users Despite Apple's Privacy Features

Thursday September 22, 2022 5:12 am PDT by
Meta is facing a new proposed class action lawsuit that accuses it of tracking and collecting the personal data of iPhone users, despite features and policies made by Apple which are meant to stop that same type of tracking. In August, it was revealed that with the Facebook and Instagram apps, Meta can track all of a user's key taps, keyboard inputs, and more, when using the in-app browser....
apple watch ultra reddit 1

Lucky Customer Gets New Apple Watch Ultra Two Days Early

Wednesday September 21, 2022 2:03 pm PDT by
With millions of devices shipping out to customers with every Apple launch, there's occasionally someone who gets lucky and gets a new product ahead of schedule. This time around, Redditor playalisticadillac received an Apple Watch Ultra from AT&T two days before the official debut, sharing some images on the social media site. The images include an unboxing and comparisons to the...
new airpods pro ear tips

Apple Explains Why Second-Generation AirPods Pro Ear Tips Are Incompatible With Original AirPods Pro

Thursday September 22, 2022 3:12 pm PDT by
Apple today explained why the new silicone ear tips for the second-generation AirPods Pro are not officially compatible with the original AirPods Pro. In an updated support document, Apple said the original AirPods Pro ear tips have "noticeably denser mesh" than the second-generation ear tips. Apple did not provide any additional details, but the mesh density could result in acoustical...