A minimalist productivity timer that uses behavioral psychology principles to help maintain focus.

• Variable Ratio Reinforcement: Random alert sounds between 3-5 minutes create stronger engagement
• BRAC Cycles: 90-minute work sessions followed by 20-minute breaks align with natural human ultradian rhythms
• Attention Reset: Alert sounds help users regain focus when distracted
• Simple Interface: Just Start and Reset buttons - no complex settings

1. Click Start to begin a focus session
2. The app will:
   • Play random alert tones every 3-5 minutes (with 10s reminder)
   • After 90 minutes, automatically start a 20-minute break
3. Click Reset at any time to stop the current session

This app implements three key psychological concepts:

• Variable Ratio Reinforcement (VBR):

  • Random timing (3-5 minutes) creates stronger engagement than fixed intervals
  • Mimics effective behavioral conditioning techniques

• Basic Rest-Activity Cycle (BRAC):

  • 90-minute work / 20-minute rest periods
  • Aligns with natural human ultradian rhythms
  • Optimizes cognitive performance throughout the day

• Attention Reset (Replay):

  • Alert sounds help regain focus when distracted
  • Provides gentle reminders to return to task

• Enhanced focus and concentration through timely reminders
• Prevention of mental fatigue via structured breaks
• Improved memory and attention through focus/break cycles
• Increased productivity by working with natural energy rhythms
• Reduced decision fatigue with automatic session management

• macOS 12.0 or later
• Xcode 14+ (for development)

1. Clone this repository
2. Open Focus.xcodeproj in Xcode
3. Build and run the project

To create a distributable Focus.app bundle:

1. In Xcode, select Product > Archive
2. Wait for the archive to complete
3. In the Organizer window, select your archive
4. Click "Distribute App"
5. Choose "Copy App" as the distribution method
6. Select a destination folder
7. The Focus.app bundle will be created in your chosen location

To change the alert sounds:

1. Replace sound files in Assets.xcassets
2. Update references in ContentView.swift