Apps That Filter Your Phone’s Blue Light

Your phone might make it difficult to sleep. Many people look at their devices late at night, but most experts say that looking at screens too late at night can disrupt natural sleep patterns and create sleep disorders. The reason? A photoreceptor in your eyes is sensitive to a band of blue light found in many devices, which may lead to the suppression of your production of melatonin, a hormone that monitors your sleep-wake cycles. Sunlight also contains blue light, so, if your body thinks it’s seeing sunlight at night, it will be confused about its natural sleep cycles.

It’s not always practical to turn off all of your devices once the sun sets. That’s why it’s so important to turn off the blue light in your phone so you can fall asleep at night. Here are two apps that let you do just that.

Bluelight Filter
The Bluelight Filter doesn’t alter your phone at all during the daytime, but at night, it puts a red filter over your phone to filter out the harmful blue light. You can set the opacity of the red filter, which also reduces your phone’s glare. Most users agree that the filter reduces eyestrain when using your phone in a dimly-lit room. While the app is effective in improving your sleep, it can also turn black text on your screen into a dark red that can be difficult to read.

CF.lumen
If you’ve rooted your phone, you can download an even more powerful blue light filter: CF.lumen. This blue light filter cancels out the default brightness of your phone, so it works at your phone’s root level, rather than as an overlay. The app also knows the sunrise and sunset times where you live so it can put a sundown filter over your phone at the end of the day. The app works well because it keeps your black colors black and doesn’t make your screen lose contrast.

Want to stop any worries about the safety of your phone from keeping you up at night? Download PSafe Total and sleep easy. PSafe’s anti-virus feature scans your phone’s SD card and files throughout the night, so you’ll never have to worry about your phone’s protection. PSafe is like a security blanket for your phone — all day and all night.

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The dfndr blog is an informative channel that presents exclusive content on security and privacy in the mobile and business world, with tips to keep users protected. Populated by a select group of expert reporters, the channel has a partnership with dfndr lab's security team. Together they bring you, first-notice news about attacks, scams, internet vulnerabilities, malware and everything affecting cybersecurity.