Night Mode
Night Mode lowers the brightness of your screen lower than is possible with its default settings. What the app does is put an overlay filter over the screen that serves as a dimmer so you can look at the screen for longer without issue. Additionally, the app disables the backlight from hardware or soft buttons.

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Night Screen
Like Night Mode, Night Screen reduces your screen’s brightness. It also lays a dimmer screen over your phone. The app sets Android’s default brightness settings to the lowest they can go, turns on a blue light filter for better sleep, and dims the transparent navigation bar in some versions of Android.

Midnight
Midnight also lowers your screen brightness below default levels to reduce eyestrain and save your battery. Additionally, you can change the color of the filter screen to fit your personal preferences, and the app’s automatic mode starts or stops the filter screen based on the brightness of the surrounding area. The app also gives you automatic controls so you don’t always have to be switching apps around to use it.

Twilight
Twilight is designed to make your sleep better if you use on-screen devices before you fall asleep at night. The Twilight app filters blue light — the kind of light emitted by your device after sunset — and protects your eyes with a red filter. The filter’s intensity is adjusted based on the time the sun rises and sets where you live.

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One of the most commonly noted problems with Twitter was that it was hard to see it at night. Its bright white interface was too hard to look at for very long, meaning that users preferred using Twitter during the day. Plenty of third-party apps made Twitter more night-vision friendly, but the official app itself didn’t offer anything to make reading and late-night posting easier for users.

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But recently, Twitter rolled out a new night mode feature exclusively for Android. When you turn on the night mode feature, Twitter’s white interface changes into a deep blue or, as some users see it, into a dark grey.

You can’t set a timer for Night Mode to turn on or off. It also doesn’t turn on automatically after a certain hour of the day and it doesn’t function in connection with your phone’s brightness. Aside from lacking automatic features, Twitter’s night mode isn’t hard to use. Here’s how to turn it on.

1. Open the Twitter app on your smartphone.
2. Your app will have one of two options: either a navigation menu icon made up of three blue lines or profile icon.
3. Click whichever icon you have on your app.
4. You will see a bar that says “Night Mode” with a slider next to it.
5. To enable Night Mode, turn the slider to “On.”
6. If you want to turn Night Mode off, repeat steps 1 through 4 and then toggle the slider to “Off.” Of course, you can also leave Night Mode on all the time if you prefer the way it looks.