Iris
Iris is a specialized blue light filter and eye protection software designed to reduce eye strain, improve sleep quality, and prevent headaches by automatically adjusting screen color temperature.
f.lux
f.lux is a cross-platform computer program that adjusts your display's color temperature according to location and time of day to reduce eye strain and improve sleep quality.
Quick Comparison
| Feature | Iris | f.lux |
|---|---|---|
| Website | iristech.co | justgetflux.com |
| Pricing Model | Freemium | Free |
| Starting Price | Free | Free |
| FREE Trial | ✓ 7 days free trial | ✘ No free trial |
| Free Plan | ✓ Has free plan | ✓ Has free plan |
| Product Demo | ✘ No product demo | ✘ No product demo |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2015 | 2009 |
| Headquarters | Sofia, Bulgaria | Los Angeles, USA |
Overview
Iris
Iris is a dedicated eye protection solution that helps you reduce the physical toll of long hours in front of a computer. By automatically adjusting your screen's color temperature and brightness, it eliminates the flicker and blue light that typically cause eye fatigue and disrupt your natural sleep cycles. You can choose from various pre-set modes like Health, Sleep, or Reading to match your current activity and environment.
The software works at the driver level to control the pulse-width modulation (PWM) of your monitor, ensuring a flicker-free experience even at lower brightness levels. Whether you are a programmer, designer, or office worker, you can customize every aspect of your display to protect your vision and maintain high productivity throughout the day without the typical afternoon burnout.
f.lux
f.lux is a display management tool designed to align your screen's brightness and color with your internal biological clock. During the day, your screens look like sunlight, but as the sun sets, the software automatically transitions your display to a warmer, amber hue. This shift mimics indoor lighting and reduces the blue light exposure that often interferes with your sleep patterns and causes digital eye strain.
You can customize the experience by telling the software exactly what kind of lighting you have and where you live. It then handles the transitions automatically, so you never have to manually adjust your monitor settings as evening approaches. It is a set-it-and-forget-it solution for anyone who spends long hours in front of a computer, especially during late-night sessions.
Overview
Iris Features
- Blue Light Filter Adjust your screen's color temperature to remove harmful blue light and help you fall asleep faster after work.
- PWM Flicker Prevention Control your monitor brightness without high-frequency flickering to prevent the hidden cause of many chronic headaches.
- Smart Modes Switch between specialized presets like Cinema, Gaming, or Programming to get the perfect balance of protection and clarity.
- Location Tracking Sync your screen transitions with the local sunrise and sunset so your display feels natural throughout the day.
- Break Reminders Set automated timers that remind you to look away from the screen and rest your eyes at healthy intervals.
- Multi-Monitor Support Apply your custom eye protection settings across all connected displays simultaneously for a consistent and comfortable viewing experience.
f.lux Features
- Adaptive Color Tones. Automatically transition your screen from cool daylight tones to warm indoor colors as the sun sets in your specific location.
- Location-Based Timing. Enter your coordinates or zip code so the software can precisely calculate sunrise and sunset times for your exact area.
- Custom Color Profiles. Choose from various presets like 'Reduce Eyestrain' or 'Classic f.lux' to find the exact warmth level that feels best for you.
- Movie Mode. Preserve colors and shadow detail while watching films with a specialized setting that maintains a balanced look for media.
- Darkroom Mode. Turn your entire screen red and black to preserve your night vision and eliminate blue light entirely in dark environments.
- Smart Lighting Control. Connect your smart home bulbs to the software to synchronize your entire room's lighting with your computer screen's color.
Pricing Comparison
Iris Pricing
- Basic blue light reduction
- Manual mode switching
- Brightness adjustment
- Automatic location detection
- Cross-platform support
- Everything in Mini, plus:
- Advanced PWM flicker control
- Custom color temperature
- Unlimited preset modes
- Advanced break reminders
- Priority technical support
f.lux Pricing
- Full automated color shifting
- Location-based transitions
- Customizable color presets
- Movie and Darkroom modes
- Smart bulb integration
- Everything in Personal, plus:
- Legal use for organizations
- Support for the developers
- One-time payment options
- Volume licensing available
Pros & Cons
Iris
Pros
- Significantly reduces eye strain during long work sessions
- Noticeable improvement in sleep quality for night workers
- Highly customizable settings for advanced technical users
- Low system resource usage prevents computer slowdowns
Cons
- Interface can feel slightly dated and technical
- Initial setup requires some trial and error
- Occasional conflicts with specific graphics card drivers
f.lux
Pros
- Completely free for personal use
- Extremely lightweight on system resources
- Significant reduction in late-night eye strain
- Set-it-and-forget-it automation works reliably
Cons
- Can interfere with color-accurate design work
- Occasional flickering during transition periods
- Interface feels slightly dated compared to modern apps