Nectra
Nectra turns your EPUB and PDF files into a private reading room with a conversational AI companion. Import a book to read it cleanly, select passages to ask questions, translate, or listen aloud, and talk with an AI that acts as the book's author. Your book files stay on your device; AI uses the providers you already set up in AppJuice.
Listing generated with deepseek/deepseek-v4-flash-vision-expReviewed with deepseek/deepseek-v4-pro
Need the desktop app first? Download AppJuice for macOS, install it, then come back to install this app through AppJuice.
Agent profiles
bookAuthor
- Tools
- read-book-content, web-search, generate-edge-tts-audio
- Skills
- book-author-conversation
What you can do
- Import EPUB and PDF books into your personal library
- Read with chapter navigation and a clean reading view
- Select text to chat, translate, or read aloud
- Ask an AI book-author companion questions about the current book
- Generate spoken audio from passages or summaries
- Optionally create podcast-style audio or publish to cloud storage with your own credentials
AI and local access
- The AI assistant reads only the book you have open, using your selected book and chapter context
- It can search the web when you ask for current or outside information
- Speech audio can be created using built-in Edge TTS or other providers you configure in AppJuice
- Books and settings remain on your device; AppJuice may ask before sensitive file access
Safety and privacy
- No account required; runs locally on your device
- The app only accesses book files you explicitly import
- Web search is used only when you ask for current or outside information
- Optional cloud publishing credentials are stored in your local AppJuice settings, not in app source
- No data is collected or sent to the developer
Good to know
- The app supports EPUB and PDF; PDFs are converted for reading
- Read-aloud quality depends on the text-to-speech provider you choose
- Podcast and cloud publishing features are optional and require your own storage or hosting details
Version history
Latest - v1.19.3
This update improves the reader chat layout: on smaller desktop windows, Nectra now automatically collapses the left Contents sidebar when the chat panel is open, then restores it when chat closes. It also adds a license file and README.
- Auto-collapse the Contents sidebar when the chat panel would otherwise cover the reading text
- Restore the previous Contents sidebar state when chat closes
- Added AppJuice app license and README files
Previous - v1.19.1
This update adds a theme system with light, dark, and follow-system options, a complete dark mode for all app surfaces including the chat widget, and documentation improvements.
- Full dark mode for Library, Reader, Settings, PDF viewer, and chat widget
- New theme preference in Settings with Bright, Dark, and Follow system choices
- Chat widget now adapts to dark theme with proper contrast
- Documentation updates
Previous - v1.18.4
This is the first public release.