Blue Light Filter 4.2.4 for Mac Catalina Full Free Download New Version 2022

Blue Light Filter 4.2.4 for Mac Catalina Full Free Download New Version 2022

Why You Need a Blue Light Filter 4.2.4 Free Download 2022

Blue Light Filter 4.2.4 for Mac: You need to use a blue light filter because you can’t afford not to protect your eyes. Prolonged exposure to blue light can cause serious eye issues. If you experience eye pain and strain now, you need to start using a proper filter, so you can get back to work and remain productive. A good filter will help protest your eyes so here is what you need to look for.

blue light filter software for mac

Blue Light Filter Options

You can just walk away from your computer periodically to rest your eyes, but most of us need to work long hours at a screen so this isn’t a good option. There are glasses on the market that have a blue light filter, and these will protect your eyes, but these can be expensive and for many aren’t that practical. The best Mac blue light filter option is to use software specifically designed to work with your Mac computer, so your eyes are protected from blue light at all times.

There are many different programs out there that can help you.

blue light filter apple mac

Choosing a Blue Light Filter Program

The first thing you need to do is ensure that the program works with Mac. Many programs only work with windows or other operating systems, so you need a program that is designed to work with your computer. You want a blue light filter software that is robust and has a lot of features.

Look for a free program to try it out and then ensure there’s a pro version as the pro version usually has the features that you’re looking for and it’s generally a better option for the maximum in eye protection. Make sure the program has a lot of options, settings, and that it’s produced by a good company.

There’s a lot of poor options out there so you need a program that’s going to do a good job. Proper documentation and guides are helpful, so you can get up and running in no time. We created Iris software and you can try it on your MacBook.

How to use a blue light filter on your PC or Mac

Researchers are continually releasing studies on the potential harm of blue light filters. When you stare at a screen all day and into the evening, it can affect your sleep and disrupt your body’s natural rhythms. For these reasons, blue light filters are incredibly important.

Whether you are spending your day on a Windows PC, Mac, or Chromebook, you should enable their blue light filter to help ease the strain on your eyes. Desktop screens and laptops typically have a built-in filter you can access, and there are downloadable options in case your computer doesn’t have this feature available.

If you’re looking for a blue light filter for your smartphone, however, there are plenty of great apps you can download from the Google Play Store or iOS App Store.

blue light filter for mac free download

What’s the problem with blue light?

The reason blue light hurts is purely biological. Sleep is a part of the circadian rhythm, which is the cycle of biological processes that are determined in part by the levels of light and dark exposed to our bodies.

In the most natural setting, which is one where we’re only exposed to sunlight, our retinas sense when the sun descends and the environment grows darker. That induces our hypothalamus to start the process of producing melatonin and other sleep hormones and reducing our body temperature.

When we use artificial lighting to extend our day, however, our bodies get confused and the various sleep signals are disrupted. Even worse is the blue light emitted by fluorescent and LED lights — like those on our various device displays — which cause us to be more alert and produce even less melatonin.

That’s why using a blue light filter is so important.

Windows 10

Microsoft added a blue light limiting feature to Windows 10 in the Creators Update released in April 2017. Called night light, this feature shifts the Windows 10 display to show warmer colors that reduce the amount of emitted blue light. Turning the feature on is a simple process.

  • Right-click on the Start button, and select Settings on the Power User menu. Alternatively, you can press the Windows + X keys and then click Settings.
  • Choose System in the pop-up window.
  • The Display category opens by default.  Scroll down on the right and toggle on the Night Light setting.

To configure the night light feature, click the Night Light settings link located under the toggle. Here, you’ll find options for turning the night light on immediately, adjusting the strength, and scheduling when the night light turns on and off.

To set the schedule, toggle the Schedule Night Light option to on. Then, you can either choose to let night light turn itself on at sunset and off at sunrise — automatically determined by your location — or you can set the time manually by clicking Set Hours and choosing when the feature should turn on and off.

When you first turn the feature on, you’ll notice the color shift immediately. After a while, your eyes will adjust to the change and it should be less obvious. By reducing the amount of blue light, however, the night light feature will then limit the impact of using your Windows 10 PC late at night — you could find it easier to get to sleep, and your sleep might be deeper and more restful.


First introduced in iOS, Apple brought Night Shift to Macs in MacOS Sierra in March 2017. As with Windows 10, the feature is easy enough to turn on and configure to your tastes.

  • Click the Apple logo in the top left corner and select System Preferences on the drop-down menu. Alternatively, click the System Preferences icon on the Dock.
  • Select Displays in the pop-up window.
  • Click the Night Shift tab in the following pop-up window.

Here you can configure when Night Shift automatically runs, turn it on until the next sunrise, and set your preferred color temperature. For scheduling, you can let MacOS turn it on and off at sunset and sunrise based on your location, or you can set a custom schedule.

As with Windows 10’s Night light feature, Apple’s Night Shift makes your display’s colors warmer and reduces the amount of emitted blue light. Give it a try to see if it improves your sleep habits and lets you be healthier, more productive, and generally a happier Mac user.


Devices based on Google’s Chrome OS have a built-in blue light filter called Night Light. The simplest way to enable this feature is to click on the System Clock followed by the Night Light button on the pop-up menu. The screen is automatically washed with a dark amber hue.

For more control over Night Light, do the following:

  1. Click on the System Clock and select the Gear icon on the pop-up menu. This opens the Settings window.
  2. Select Device listed on the left.
  3. Select Displays listed on the right.
  4. Click on the toggle located to the right of Night Light to enable this feature.
  5. Move the slider between Cooler and Warmer to adjust the blue light level.
  6. Next to Schedule, click the down arrow to select Never, Sunrise to Sunset, or Custom.
  7. If you select Custom, a timeline appears from 6 p.m. to 6 p.m. Select the duration by moving the start and stop times accordingly.

External displays

While you can change the level of blue light on the software side, external monitors may include a blue light filter you can manage with integrated On Screen Display (OCD) controls.

For instance, press the OCD button on Acer’s SB220Q 21.5-inch display and a control panel appears on the screen separate from the PC’s desktop. As shown above, it includes options for adjusting the brightness, sharpness, and blue light adjustment. You can manually switch between 50% to 80%. You will get more blue light as you increase this value.

Adjusting the blue light level on the OS side is definitely easier given how physical buttons can be cumbersome. You will get a more consistent result with this method since your blue light settings will apply, whether you connect the device to a PC, Mac, or Chromebook.

Third-party alternatives

F.lux — F.lux utilizes innovative technology to monitor the sun within your area. Available and Free for Windows, MacOS, and Linux, this tool will work to ensure your monitor’s temperature adjusts to the light level you’re in. You can also use this tool to adjust the lights in your home if you have a smart lighting system. Finally, you can turn this feature off at any time with the flip of a switch so it doesn’t affect things like photo editing apps.

Iris mini — A truly lightweight blue-light filter application, Iris mini has no UI, no buttons, and no “confusing options,” just the ability to adjust your monitor’s coloring to best protect your eyes from glare and harmful blue light. You can adjust the settings yourself or rely on the automatic mode. The automatic mode will set your screen’s colors depending on the time of day.  It has versions for Windows, Mac, and Linux, so no matter what platform you’re using, you’ll be able to take advantage of it.


Iris software will work for the Mac so it’s a good blue light filter mac option. This software has robust features and there’s a free as well as a pro version. The Pro version has more features and it’s recommended if you want the best blue light filter protection possible. You need to protect your eyes from the blue light.

Consider Iris software as we produce a great blue light filter with lots of options to meet your needs.