RSVP Reader

Spritz-style speed reading app with Optimal Recognition Point (ORP) highlighting.

Support

Most of my work stays free and open-source. Support early access, live sessions, and workshop-time: https://www.patreon.com/Seriousshit

Features

• RSVP Display: Words shown one at a time, perfectly centered
• ORP Highlighting:
  • Odd-length words: center letter highlighted
  • Even-length words: both middle letters highlighted
• Multi-format: PDF, DOCX, EPUB, TXT, Markdown
• PWA: Installable, works offline
• Keyboard shortcuts: Space (play/pause), arrows (navigate/speed)

Usage

Web (Development)

# Serve locally
python3 -m http.server 8080
# Open http://localhost:8080

Android APK

See Building APK below.

Keyboard Shortcuts

Key	Action
Space	Play/Pause
←	Back 5 words
→	Forward 5 words
↑	Increase WPM
↓	Decrease WPM
Esc	Close reader

Building APK

This project uses Capacitor to build native Android APKs.

Prerequisites

1. Node.js 18+
2. Android Studio with SDK
3. Java 17+

Setup

# Install dependencies
npm install

# Add Android platform
npx cap add android

# Build and sync
npm run build
npx cap sync

Build APK

# Open in Android Studio
npx cap open android

# Or build from command line
cd android
./gradlew assembleDebug

APK will be at android/app/build/outputs/apk/debug/app-debug.apk

Project Structure

rsvp-reader/
├── index.html          # App shell
├── index.css           # Styling
├── app.js              # Main logic
├── manifest.json       # PWA manifest
├── sw.js               # Service worker
├── capacitor.config.ts # Capacitor config
├── package.json        # Dependencies
└── lib/
    ├── orp.js          # ORP calculation
    ├── tokenizer.js    # Text tokenization
    ├── timing.js       # Playback timing
    └── parsers/        # Document parsers

License

MIT