If you’re a night reader on your mobile device, then you know that it’s hard to get tired with the bright screen burning your eyeballs. This of course isn’t a problem with physical books, as you can add a soft light to the room to wind down.
Google Play Books wants to emulate that softer experience with a feature it calls “Night Light.” As the evening goes on, it gradually filters out the blue light from your screen to make flipping through pages more comfortable.
Here’s what the team had to say about the new feature:

The feature is rolling out to Android and iOS now. To activate the feature, just update the Google Play Books app. Once you open the app, you’ll get a prompt to turn on the automatic mode.
