f.lux alternatives for Android: here are some apps that aim to reduce eye strain and help you sleep16
We guess that most of you have experienced the horror of having your retinas burned by your phones' displays while in bed during the night. Apart from suddenly revoking your desire for sleep, smartphone displays also tend to disrupt your inner circadian rhythms if you use them for a long time right before you usually go to sleep, as they fool your brain that daytime is coming.
As all of the above are neither pleasant nor beneficial for you, if you absolutely need to use your Android smartphone or tablet right before you have to lay on the pillow and call it a day, then you should know that there's a category of third-party apps that aim to reduce eyestrain right before you go to bed.
You might be familiar with F.lux, an application for Windows, Mac, Linux, and iOS, that mimics the sun and and aims to protect your eyes from being "blinded". While it's not available on Android right now, there's a respectable host of apps on Google Play that have similar functions. Here are some of the better ones.