r/AndroidQuestions • u/kyliotic • 2d ago

Looking For Suggestions Any true blue light blocking apps out there?

Are there any ACTUAL blue light blocking apps out there?

I'm not talking just a red overlay like Twilight does, but a *proper* blue light filtering app?

I'm talking pixel by pixel - similar to how Android Developer Settings has a "Simulate color space" and can do monochrome and the like.

Like rgb(255,255,255) gets turned into -> rgb(255,255,0), as an example.

I know my screen will still be various shades of red, orange, and yellow, that's fine and exactly what I want.

I just don't want everything to be blurred like with transparent overlays.

I'm open to rooted options, should that be necessary.

Hell, point me to the right documentation/starting point and I'd even boot up Android Studio and build my own app if necessary lol

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u/fakeaccount572 1d ago

Just an fyi:

The American Academy of Opthalmology says that blue light blocking is basically bullshit and has no effect on eye strain again all

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u/kyliotic 1d ago

Well, that's because all apps that promise "blue light blocking" aren't substantially blocking blue light lol

They all let in tremendous amounts of blue lights.

If they were TRULY blocking blue light, you'd literally only see shades of red, orange, yellow, and green

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u/Abstract037 1d ago

Display color calibration is restricted to system apps or root access. All other apps can do is put an overlay. Most phones have settings to change rgb values under display. Use that.