Night Shift - Bluelight Filter for Good Sleep is an app by Leap Fitness Group in the Health & Fitness category, listed since at least March 2021. It includes native code for x86 32-bit, x86 64-bit, ARM (legacy), ARM 32-bit and ARM 64-bit, so it runs on practically every phone.
It asks for 12 permissions, 3 of them sensitive: read shared storage, display over other apps and modify shared storage. The app offers in-app purchases through Google Play.
Description
From the listing uploaded by “appupdater”.
Blue light from the phone is a cause of eye fatigue. It disturbs your sleep and harms your eye health. The night shift function has been scientifically proven to reduce blue light. By adjusting the screen to soft light, it relieves eye fatigue, helps you sleep well and improves your vision health. 100% FREE and effective for eye care!
Features
√ Night filter shifts your screen to natural warm light
√ Help you gain one more hour of sleep
√ Protect your eyes for 24 hours with the auto-timer
√ Help maintain healthy eye habits
√ Save your battery by 15%
√ Get better sleep by reducing blue light
√ Ease eye fatigue with just one tap
√ Many colors to choose from
WHAT IS BLUE LIGHT?
Blue light is the visible light spectrum (380-550nm) for circadian regulation. It contains more energy than other visible light types, so it may damage your retinal cells.
WHY SHOULD I USE BLUE LIGHT FILTER?
Research shows that exposure to blue light imposes serious threats to retinal neurons, causes eye strain, dry eyes, and inhibits the secretion of melatonin, a hormone that influences circadian rhythms. With our night shift function, your vision health will be greatly improved.
CAN BLUE LIGHT FILTER IMPROVE MY SLEEP?
Yes. Natural exposure to blue light during the daylight hours boosts people's energy, alertness and mood; however, it will disturb your sleep at night.(from wiki) Blue light filter can effectively reduce blue light from the screen and help you get better sleep.
RELEVANT SCIENTIFIC STUDIES
1. Steven W. Lockley, George C. Brainard, Charles A. Czeisler. “High Sensitivity of the Human Circadian Melatonin Rhythm to Resetting by Short Wavelength Light”. J Clin Endocrinol Metab. 2003 Sep;88(9):4502-5.
2. Burkhart K, Phelps JR. “AMBER LENSES TO BLOCK BLUE LIGHT AND IMPROVE SLEEP: A RANDOMIZED TRIAL”. Chronobiol Int. 2009 Dec;26(8):1602-12.
3. ----“Effects of blue lights technology”. https://en.wikipedia.org/wiki/Effects_of_blue_lights_technology
4. “How exposure to blue light affects your brain and body”. Nature Neuroscience; Harvard Health Publications; ACS, Sleep Med Rev, American Macular Degeneration Foundation; European Society of Cataract and Refractive Surgeons; JAMA Neurology
Blue light from the phone is a cause of eye fatigue. It disturbs your sleep and harms your eye health. The night shift function has been scientifically proven to reduce blue light. By adjusting the screen to soft light, it relieves eye fatigue, helps you sleep well and improves your vision health. 100% FREE and effective for eye care!
Features
√ Night filter shifts your screen to natural warm light
√ Help you gain one more hour of sleep
√ Protect your eyes for 24 hours with the auto-timer
√ Help maintain healthy eye habits
√ Save your battery by 15%
√ Get better sleep by reducing blue light
√ Ease eye fatigue with just one tap
√ Many colors to choose from
WHAT IS BLUE LIGHT?
Blue light is the visible light spectrum (380-550nm) for circadian regulation. It contains more energy than other visible light types, so it may damage your retinal cells.
WHY SHOULD I USE BLUE LIGHT FILTER?
Research shows that exposure to blue light imposes serious threats to retinal neurons, causes eye strain, dry eyes, and inhibits the secretion of melatonin, a hormone that influences circadian rhythms. With our night shift function, your vision health will be greatly improved.
CAN BLUE LIGHT FILTER IMPROVE MY SLEEP?
Yes. Natural exposure to blue light during the daylight hours boosts people's energy, alertness and mood; however, it will disturb your sleep at night.(from wiki) Blue light filter can effectively reduce blue light from the screen and help you get better sleep.
RELEVANT SCIENTIFIC STUDIES
1. Steven W. Lockley, George C. Brainard, Charles A. Czeisler. “High Sensitivity of the Human Circadian Melatonin Rhythm to Resetting by Short Wavelength Light”. J Clin Endocrinol Metab. 2003 Sep;88(9):4502-5.
2. Burkhart K, Phelps JR. “AMBER LENSES TO BLOCK BLUE LIGHT AND IMPROVE SLEEP: A RANDOMIZED TRIAL”. Chronobiol Int. 2009 Dec;26(8):1602-12.
3. ----“Effects of blue lights technology”. https://en.wikipedia.org/wiki/Effects_of_blue_lights_technology
4. “How exposure to blue light affects your brain and body”. Nature Neuroscience; Harvard Health Publications; ACS, Sleep Med Rev, American Macular Degeneration Foundation; European Society of Cataract and Refractive Surgeons; JAMA Neurology
Security & authenticity
Security rating: Trusted
Signing certificate
Signature matches the Google Play versionChecked by the source store on Nov 7, 2025.
Certificate issued to “abishkking”This is the certificate of the Google Play version.
Store checks and file details
Developer signature verifiedNov 7, 2025
Validated against Google PlayNov 7, 2025
Signed byCN=abishkking, OU=abishkking, O=abishkking, L=China, ST=Henan, C=CN
Uploaded by “appupdater”Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (12)
Night Shift - Bluelight Filter for Good Sleep requests 12 permissions, 3 of them sensitive.
Display over other appsSensitiveandroid.permission.SYSTEM_ALERT_WINDOW
Night Shift - Bluelight Filter for Good Sleep APK: questions and answers
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is Night Shift - Bluelight Filter for Good Sleep free?
The APK is free to download, but the app offers in-app purchases through Google Play.
Is the Night Shift - Bluelight Filter for Good Sleep APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is fb299e3a5edb7d8355c80edc7b1ccfa5.