Orionian Night Filter

Your phone is the brightest, bluest light in a dark room. Night Filter turns the whole screen warm and dim, like a lamp in the evening.

And it has no internet access. None. It was built without that permission, so Android won't let it connect, even if we wanted it to. No ads, no analytics, no account, no crash reports. That matters for an app that sits over every app you open, from your messages to your bank to your two-factor codes. The popular filters we checked all show ads, go online, or both.

Warm light, not an orange sheet
A plain tinted layer turns black into muddy brown and washes everything out. Night Filter works out the true color of light at the temperature you choose and makes white that color. It takes blue away instead of painting orange on top, so blacks stay close to black and colors keep their relationships. It's a blue light filter that still looks like your screen.

Why warm and dim
Bright, blue-rich light late in the evening can hold back melatonin, the hormone that tells your body it's night. Brightness counts as well as color, so Night Filter handles both.

Already have Night Light?
If your phone's built-in night mode is all you need, keep using it. Night Filter began when Night Light and Extra dim, both on, still weren't warm enough or dark enough:
• Warmer: down to 1700 K, past candlelight. Android's standard Night Light stops around 2600 K.
• Darker: Dim works on top of your lowest brightness, and on top of Extra dim if your phone has it, so it goes as dark as you need. Warmth and dim share one switch and one timer.
• Gentler: the timer fades in over 20 minutes instead of switching over in seconds.
• The same on every phone with Android 8 or later, any brand.

What you get
• Six presets named after real light: Candlelight 1800 K, Dawn 2000 K, Incandescent 2700 K, Night 3200 K, Halogen 3400 K and Fluorescent 4200 K. Or pick anything from 1700 to 4500 K.
• Intensity and Dim, set separately, with live preview. Dim doubles as a screen dimmer for reading in bed.
• Auto timer with your own start and end times, fading in and out over 20 minutes, the way dusk does.
• Pause for a minute from the notification, for a clean screenshot or true colors. It comes back on its own.
• Quick Settings tile and home-screen widgets.
• Comes back on after a restart or an app update.
• Your taps pass straight through.

Cover the status bar too (optional)
Out of the box, Night Filter tints your apps. To also cover the status bar, notification shade, quick settings and lock screen, turn on "Cover status bar and notifications". Android only allows that through its Accessibility service, so Night Filter explains this and asks first. The service draws the filter and does nothing else. It doesn't read your screen, doesn't see what you type, and can't tap or act for you. It isn't an accessibility tool, and you can turn it off at any time.

Private by design
• No internet permission, so Android blocks any connection.
• Seven permissions, each with one job: display over other apps (draws the filter), two to keep it running, notifications (Pause and Turn off), run at startup (back on after a restart), Google Play billing (buys Pro) and approximate location (only if you ask).
• Your settings are the only data it keeps, and they never leave this phone.

Night Filter Pro
Everything above stays free. Pro is one purchase, and it keeps Night Filter free of ads. It adds four things:
• Wind down: the light keeps warming through the evening, to candlelight by bedtime.
• Follow sunset: the timer runs from sunset to sunrise, by your time zone, a town you pick or, if you choose, your location.
• Your own presets: save the color, intensity and dim you like.
• Preset widget: your presets on your home screen.

Made for the dark
A true-black interface built around one control: tap the setting sun.

Night Filter is not a medical device. If you have trouble sleeping or with your eyes, talk to a doctor.

Made by Orionian, a small Canadian app studio.

Recent changes:
Night Filter now speaks your language: Arabic, Chinese, Dutch, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Turkish and Vietnamese. It follows your phone's language, and on Android 13 and later you can pick one just for Night Filter in Settings.