f.lux vs Twilight

f.lux — f.lux is a free app that adjusts a computer's display color temperature based on the time of day, making screens appear warmer at night to reduce eye strain and disrupt sleep cycles less.

Twilight — Twilight is a free open source software that adjusts your screen to reduce eye strain. It makes the color of your screen adapt to the time of day, reducing the amount of blue light emitted. This helps

f.lux offers Adjusts screen color temperature based on time of day, Makes screen appear warmer at night, Can be scheduled to change color temperature automatically, Has options to customize color temperature, Works across Windows, Mac, Linux, iOS and Android, while Twilight provides Adjusts screen color temperature, Reduces blue light emission, Adapts to time of day, Can be scheduled, Open source.

f.lux stands out for Reduces eye strain from blue light at night, Helps maintain natural sleep cycles, Easy to install and use; Twilight is known for Reduces eye strain, Improves sleep, Customizable.

Feature	f.lux	Twilight
Overall Score	N/A	N/A
Primary Category	Os & Utilities	Os & Utilities
Pricing	Free	Open Source

Product Overview

f.lux

Description: f.lux is a free app that adjusts a computer's display color temperature based on the time of day, making screens appear warmer at night to reduce eye strain and disrupt sleep cycles less.

Twilight

Description: Twilight is a free open source software that adjusts your screen to reduce eye strain. It makes the color of your screen adapt to the time of day, reducing the amount of blue light emitted. This helps prevent disruption of your circadian rhythms and improves sleep.

Key Features Comparison

f.lux Features

• Adjusts screen color temperature based on time of day
• Makes screen appear warmer at night
• Can be scheduled to change color temperature automatically
• Has options to customize color temperature
• Works across Windows, Mac, Linux, iOS and Android

Twilight Features

• Adjusts screen color temperature
• Reduces blue light emission
• Adapts to time of day
• Can be scheduled
• Open source

Pros & Cons Analysis

f.lux

Pros

• Reduces eye strain from blue light at night
• Helps maintain natural sleep cycles
• Easy to install and use
• Completely free with no ads or upsells

Cons

• May take some time to get used to color changes
• Limited customization options
• Requires manual adjustments for daytime use

Twilight

Pros

• Reduces eye strain
• Improves sleep
• Customizable
• Free

Cons

• May alter color accuracy
• Requires manual adjustment
• Limited to adjusting color temperature

Pricing Comparison

f.lux

• Free

Twilight

• Open Source