GitHub - alen-z/time-buddy: Track your screen time on macOS using system lock/unlock logs. A simple CLI for calculating daily work hours.

2 min read Original article ↗

Time Buddy

A simple to use time tracking CLI for macOS.

Track your screen time based on macOS system logs to calculate how many hours you've worked each day.

Time Buddy Preview

Features

  • 📊 Track screen time based on macOS unlock/lock events
  • 📅 Calculate time spent per day with hourly breakdown visualization
  • 💾 Smart caching for faster subsequent runs
  • 🎨 Colorful terminal output with progress indicators

Requirements

  • macOS (uses macOS system logs)
  • Python 3.7+ (for development)

Setup (Required)

Before using Time Buddy, you must enable persistent logging for screen lock/unlock events:

sudo log config --subsystem com.apple.loginwindow --mode "persist:info"

This command configures macOS to persistently store login window events. Without this, the system may not retain the screen lock/unlock logs needed for accurate time tracking.

Note: You only need to run this once. The setting persists across reboots.

Installation

pip (Recommended)

Standalone Binary

If you don't have Python installed:

curl -fsSL https://raw.githubusercontent.com/alen-z/time-buddy/main/install.sh | bash

Or build from source:

git clone https://github.com/alen-z/time-buddy.git
cd time-buddy
make install
make install-binary

Usage

# Show version
time-buddy --version

# Show screen time for the last 7 days (default)
time-buddy

# Show screen time for the last 30 days
time-buddy --days 30

# Show detailed session information
time-buddy --verbose

# Force refresh (ignore cache)
time-buddy --no-cache

# Include weekends in expected hours calculation
time-buddy --include-weekends

# Clear the cache
time-buddy --clear-cache

Development

# Install dependencies
make install

# Install locally for testing (editable mode)
pip install -e .

# Run the application
make run

# Create standalone binary
make create-binary

# Test the binary
make test-binary

# Clean build artifacts
make clean

How It Works

Time Buddy reads macOS system logs for screen lock/unlock events and calculates:

  • Raw time: Actual screen-on time between unlock and lock events
  • Block time: Sum of time spans for each continuous work session (gaps >1 hour create separate blocks)

The output shows a 24-hour visualization where each block represents an hour, colored by activity intensity.

License

MIT License