LightBulb icon
LightBulb icon

LightBulb

 102 likes

Background application that adjusts screen gamma, making the colors appear warmer at night, reducing strain on your eyes.

LightBulb screenshot 1

License model

  • FreeOpen Source

Platforms

  • Windows  Currently version only compatible with Windows 7 and higher.
3.4 / 5 Avg rating (22)
102likes
22comments
0news articles

Features

Suggest and vote on features

Properties

  1.  Lightweight
  2.  Customizable
  3.  Optimal performance
  4.  Configurable

Features

  1.  Color Temperature
  2.  Portable
  3.  Blue light filter
  4.  Support for Hotkeys
  5.  Fullscreen Pause
  6.  Automatic Lighting Control
  7.  Dark Mode
  8.  Application Whitelist
  9.  Color correction
  10.  Graphical User Interface
  11.  Application whitelisting
  12.  Sane defaults
  13.  Auto Update
  14.  Location-based
  15.  Automatic brightness dimming

 Tags

  • sunrise
  • gamma
  • eye-strain
  • background
  • correction
  • sunset

LightBulb News & Activities

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Recent activities

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LightBulb information

  • Developed by

    Alexey 'Tyrrrz' Golub
  • Licensing

    Open Source (MIT) and Free product.
  • Written in

  • Rating

    Average rating of 3.4 (22 ratings)
  • Alternatives

    53 alternatives listed
  • Supported Languages

    • English

AlternativeTo Categories

OS & UtilitiesTravel & Location

GitHub repository

  •  2,398 Stars
  •  150 Forks
  •  4 Open Issues
  •   Updated Apr 2, 2025 
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Popular alternatives

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Our users have written 22 comments and reviews about LightBulb, and it has gotten 102 likes

LightBulb was added to AlternativeTo by Tyrrrz on Feb 6, 2017 and this page was last updated Sep 9, 2022.

Comments and Reviews

   
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Comment summary: LightBulb is praised for its ease of use and features comparable to F.lux, with added support for custom hotkeys and better system resource management. It addresses issues like flickering caused by F.lux and synchronizes geolocation settings automatically. However, some users are dissatisfied with politically charged content introduced by the developer, impacting their experience. A portable version and screen dimming feature are positives, whereas occasional bugs and brightness control limitations are noted concerns.
Top Positive Comment
CaptaPraelium
Mar 14, 2017
7
Top Negative Comment
no008080
Jul 4, 2022
2

Developer has started to pester users with messages about the Russian-Ukrainian war on both his GitHub page and program startup and thus jeopardized user experience over his personal ideals while forcing others to comply with him (at least in his head). Hope he takes some time off.

fujimoka
Nov 13, 2022

Indeed ... I'm a bit bothered that it sometimes makes the software unusable.

Efi Jovanovic
Jun 25, 2024
0

Extremely politically charged garbage, doesn't belong to a screen dimming app

r-tur
Dec 21, 2023
-1

V2.4.7 Not any near to Russia, got "terrorist" message. After closing this the process still there & performance decreases, not any chance to close it. Kind of virus things. Thanks VirtualBox. This guy is done. Avoid these troubles.

vozkaa
Oct 31, 2023
0

Similar features to f.lux, but it supports screen dimming as well, which f.lux cannot do (and afaik will not do, they want to keep the feature set limited for better or worse). This was the reason for me to switch to Lightbulb. It is also overall less opinionated - it gives you more options to control how it should work (including exceptions for fullscreen apps, less frequent gamma updates, pause for a custom time period etc.). The only feature missing for me is to automatically switch windows to dark theme, have to use a separate app for that.

Ignore the 1* ratings, people are just upset that the developer is understandably unhappy about his country being invaded. Doesn't change the functionality at all.

Mark
Feb 4, 2023
-1

if it wasnt for political tool id gave it 5 stars

fujimoka
Nov 13, 2022
1

Very great software. I couldn't stand the bugs in flu.x anymore so I looked up an alternative and this popped up. The minus star is because there is often a bug when the message for Ukraine won't go away, and the software need to be reset.

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7 of 22 comments

What is LightBulb?

LightBulb is an application that reduces eye strain produced by staring at a computer screen when working late hours. As the day goes on, it continuously adjusts gamma, transitioning the display color temperature from cold blue in the afternoon to warm yellow during the night. Its primary objective is to match the color of the screen to the light sources of your surrounding environment - typically, sunlight during the day and artificial light during the night. LightBulb has minimal impact on performance and offers many customization options.

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