macOS 14+ · Native · Skeuomorphic

Turn pages.
Not scroll.

RealBook replaces cold, scrolling PDF readers with a tactile, 3D animated book that feels alive in your hands.

v1.0.3 · 3 MB · Apple Silicon

RealBook

RealBook

A tactile PDF reader

Every detail, considered

RealBook isn't another PDF viewer. It's a return to the physical pleasure of reading — translated to the screen with care.

Tactile Page Flips

Physics-aligned 3D page-turn animations with synchronized easing feel indistinguishable from the real thing.

Instant Rendering

Multi-layered cache eliminates flickering and loading flashes. Every page appears the exact frame it's mounted.

Premium Aesthetics

Leather-bound cover, spine shadows, paper grain textures, and a red thread binding detail. No expense spared on craft.

Dynamic Book Architecture

Left and right page stacks redistribute fluidly as you read. The book's thickness changes with every turn.

Self-Updating

Built-in update manager delivers seamless upgrades directly. No App Store middleman. One click, atomic installs.

Native & Lightweight

Built entirely in Swift & SwiftUI for Apple Silicon. Just 3 MB. Zero bloat, maximum performance.

3 MB
App size
SwiftUI
Entirely native
60 fps
Page-turn animations

Technology & Architecture

Engine

The heart of RealBook is a custom 3D animation engine built on SwiftUI with SceneKit-inspired page-flip transforms. Each page turn uses a two-phase animation (ease-in / ease-out) with real-time shadow rendering.

  • 3D rotation transforms with perspective
  • Dynamic stack redistribution
  • Granular paper texture overlay
  • Pre-rendering window: -2 to +3 pages

Rendering pipeline

PDF pages are rendered at display resolution via Core Graphics into an NSCache with tiered eviction. High-res snapshots eliminate flicker during rapid page navigation.

  • Double-buffered cache (RAM + latest)
  • Retina-aware scaling
  • Synchronous mount — no blank frames
  • Concurrent rendering prevention

Distribution

Distributed as a signed, notarized .dmg. Update system uses Cloudflare Pages for version checks and atomic bundle swapping via a secure shell script.

  • Over-the-air updates
  • Mandatory & optional update support
  • Automatic rollback on failure
  • Sandbox-free for file access

Design system

Skeuomorphic by conviction. The interface mimics physical book construction — leather binding, paper grain, spine curvature — translated into code with restraint and purpose.

  • Procedural paper texture generation
  • Warm, library-inspired color palette
  • Immersive full-screen reading
  • Hidden traffic-light controls on hover

The roadmap

RealBook is a small, deliberate project. The path forward is shaped by the people who pick it up — download milestones unlock the next chapter.

1
Available now

The first edition

RealBook 1.0.3 · Free

The book that started it all. A tactile PDF reader for macOS with page-turn physics, paper grain, and four hand-crafted themes.

  • 3D page-flip animations with shadow tracking
  • Dynamic book stack redistribution
  • 4 themes: Classic, Dark Library, Navy, Forest
  • Self-updating via in-app auto-updater
  • Direct download — no App Store required
2
At 100 downloads

Notarized & signed

Enroll in Apple Developer Program

Once 100 people have downloaded RealBook, the next milestone is to enroll in the Apple Developer Program and ship a notarized build. No more Gatekeeper friction — clean first-launch on any Mac.

  • Notarized DMG (stapled ticket, verified by Apple)
  • Developer ID signature
  • Hardened runtime enabled
  • One-click install with no security warnings
3
Beyond 100 downloads

Read aloud & annotate

Paid · Price TBD

With the notarization milestone behind us, RealBook moves to a paid model and grows into a fuller reading tool. Two flagship additions: native text-to-speech and handwritten-style notes.

  • Text-to-speech with macOS native voices
  • Realistic handwritten notes & annotations
  • Page-by-page reading with progress tracking
  • Per-book settings and reading preferences
  • Future: sync notes across devices

Ready to read differently?

No subscriptions. No tracking. Just a beautifully crafted piece of software that treats reading with the respect it deserves.

Download RealBook 1.0.3
macOS 14.0+ Apple Silicon & Intel 3 MB