f.lux vs Microsoft 365 Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

f.lux

0.0 (0 reviews)

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.

Starting at Free
Free Trial NO FREE TRIAL
VS

Microsoft 365

0.0 (0 reviews)

Microsoft 365 is a cloud-based subscription service that brings together premium Office apps, intelligent cloud services, and advanced security to help you achieve more across your professional and personal life.

Starting at $6/mo
Free Trial 30 days

Quick Comparison

Feature f.lux Microsoft 365
Website justgetflux.com microsoft.com
Pricing Model Free Subscription
Starting Price Free $6/month
FREE Trial ✘ No free trial ✓ 30 days free trial
Free Plan ✓ Has free plan ✘ No free plan
Product Demo ✘ No product demo ✓ Request demo here
Deployment desktop mobile saas mobile desktop
Integrations Philips Hue LIFX Salesforce Adobe Creative Cloud Slack Zoom DocuSign GitHub ServiceNow Trello Dropbox Zapier
Target Users solopreneur small-business mid-market enterprise small-business mid-market enterprise freelancer
Target Industries
Customer Count 0 0
Founded Year 2009 1975
Headquarters Los Angeles, USA Redmond, USA

Overview

F

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.

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Microsoft 365

Microsoft 365 provides you with a complete suite of productivity tools designed to help you create, communicate, and collaborate from anywhere. You get access to familiar applications like Word, Excel, and PowerPoint, enhanced with real-time co-authoring and AI-powered features. Whether you are writing a report, analyzing data, or building a presentation, you can work across your desktop, tablet, and mobile devices with files that stay synced automatically.

Beyond document creation, the platform serves as your central hub for teamwork through Microsoft Teams and secure cloud storage via OneDrive. You can host video meetings, chat with colleagues, and share files securely with internal and external partners. It solves the problem of fragmented workflows by consolidating your email, calendar, and project files into a single, secure ecosystem that protects your data with enterprise-grade security features.

Overview

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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.
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Microsoft 365 Features

  • Real-Time Co-authoring. Work on the same document simultaneously with your teammates and see their changes happen instantly in Word, Excel, and PowerPoint.
  • Intelligent Cloud Storage. Store your files in OneDrive to access them from any device and share them securely with anyone inside or outside your organization.
  • Unified Communication. Host high-definition video calls, instant message your team, and manage group projects all within the Microsoft Teams interface.
  • Advanced Security. Protect your business data across all devices with built-in malware protection, encryption, and multi-factor authentication to prevent unauthorized access.
  • AI-Powered Assistance. Improve your writing, design better slides, and analyze complex data faster with intelligent suggestions built directly into your favorite apps.
  • Cross-Device Syncing. Start a project on your office desktop and finish it on your mobile phone with apps that remember exactly where you left off.

Pricing Comparison

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f.lux Pricing

Personal Use
$0
  • Full automated color shifting
  • Location-based transitions
  • Customizable color presets
  • Movie and Darkroom modes
  • Smart bulb integration
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Microsoft 365 Pricing

Microsoft 365 Business Basic
$6
  • Web and mobile versions of Office apps
  • 1 TB of cloud storage per user
  • Business-class email (50 GB mailbox)
  • Microsoft Teams for up to 300 users
  • Standard security and support

Pros & Cons

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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
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Microsoft 365

Pros

  • Industry-standard tools ensure compatibility with clients and partners
  • Massive cloud storage included with every paid seat
  • Seamless integration between email, calendar, and file storage
  • Regular feature updates and security patches included automatically

Cons

  • Desktop applications can be resource-heavy on older computers
  • Initial setup and admin portal have a learning curve
  • Offline syncing occasionally experiences conflicts during heavy collaboration
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