F.lux changes your iOS Device’s colors to match your Indoor Lighting

F.lux is a jailbreak tweak for iOS devices that can adjust your device’s screen color to match the indoor lighting around you. This tweak is very useful if you want to change your iPhone’s screen color scheme so that its bright blue light that is designed for daylight does not hurts your eyes at night. F.lux fixes the irritating blue light coming out of your device and adjusts it to your room’s lighting.

This is how the creators of F.lux tweak explain about their tweak

We made f.lux because one day we noticed that all our laptops were the wrong color temperature at night. They looked fine during the day, but at night, they were much too blue. We realized that looking at the sun all night long might not be such a good idea.

After researching blue light’s effects on health, we found lots of evidence that color matters even more than brightness. And it turns out that timing matters, too: Blue light during the day is great for your circadian rhythm. Blue light at night is not.

Sleep researchers have just begun studying the effects of night-time usage of laptops, cell phones, iPads and other devices that emit blue light. Evidence suggests that even just a little extra blue light at night can keep you awake later and negatively affect the quality of your sleep.

Our users say that f.lux prevents eyestrain. They also say that it’s easier to wind down and go to sleep after using a f.lux-enabled device at night. Plus, you’ll never glow blue in a restaurant again.

You can use f.lux because it makes you sleep better, or you could use it because it just makes you look better. Either way your eyes will thank you.

Here’s how to use F.lux

After when you install F.lux on your device from Cydia you can configure it from going into settings.app on your device. Then you can choose the correct lighting type (by tapping on different configurations and previewing them), and transition speed (remember, for older device the long transition is instant to avoid flickering).

Once configured F.lux automatically changes your screen’s color at night time and puts it back to normal when daylight appears so you don’t have to change it on everytime.

F.lux is available in Cydia for free.

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