Comma is a minimalist EPUB and PDF reader designed for readers who value simplicity, privacy, and a distraction-free experience. Built with Apple's latest technologies, Comma transforms your digital library into an organized, beautiful collection.

INTELLIGENT ORGANIZATION (Apple Intelligence)
• Automatic book categorization across 18 categories
• AI-generated subjects for each book
• Chapter summaries with key points
• Text explanations for deeper understanding
• All processing happens on-device—complete privacy

POWERFUL LIBRARY MANAGEMENT
• Import EPUB and PDF files effortlessly
• Smart duplicate prevention
• Beautiful 3-column grid with cover art
• Category filtering with visual indicators
• Search by title or author instantly
• Floating Books view for immersive browsing

EXCEPTIONAL READING EXPERIENCE
• Full-screen, distraction-free reader
• Quotes Wall for memorable passages
• Tap to reveal elegant overlay controls
• Four beautiful themes: System, Serene Dark/Light, Cozy Sepia
• Customizable fonts, sizes, spacing, and alignment
• Both paginated and scroll reading modes
• Automatic position saving—pick up exactly where you left off
• Text highlighting with instant search
• Full-text search within books
• Visual progress tracking

PERSONALIZED SETTINGS
• Per-book preferences (each book remembers its settings)
• Adaptive overlay that matches your reading theme
• System font support for accessibility
• Instant theme switching

PRIVACY FIRST
• All AI processing happens on your device
• No cloud services or data collection
• Your library stays completely private
• No account required

APPLE INTELLIGENCE FEATURES
Comma leverages Apple Intelligence (iOS 18.2+) for automatic categorization, subject generation, chapter summaries, and text explanations. Requires iPhone 15 Pro or later or iPad with M1+. Unsupported devices use smart fallback categorization—all features work perfectly.

Comma respects your reading time. No ads, no subscriptions, no distractions—just you and your books.