Readwise

Readwise is a comprehensive reading companion tool that centralizes and resurfaces highlights and notes from various digital content sources, helping users maximize their learning and retention. With the addition of Ghostreader, an AI-powered assistant, Readwise enhances its capabilities to provide deeper insights and analysis of user-selected content.

Key features:
- Content Aggregation: Collects highlights and notes from multiple platforms and sources
- Spaced Repetition: Utilizes an algorithm to resurface important information at optimal intervals
- Customizable Review Options: Offers daily email digests, mobile app reviews, and web-based review sessions
- Tagging and Organization: Allows users to categorize and sort their highlights and notes
- Full-Text Search: Enables users to quickly locate specific information across their entire library
- Export Functionality: Provides options to export notes and highlights to various formats and platforms
- Ghostreader AI Assistant: Offers contextual understanding and generation at multiple text levels
- Default Prompts: Includes pre-set options for defining words, explaining terms, translating text, summarizing passages, and more
- Custom Prompts: Supports user-defined prompts using Jinja templating and document variables
- Multi-Platform Access: Available on web and mobile devices with keyboard shortcuts and context menus

How it works:
1. Users connect their reading accounts (e.g., Kindle, Instapaper) to Readwise
2. Readwise imports highlights and notes from connected sources
3. Users can manually add highlights or import from physical books
4. The system organizes and tags imported content
5. Readwise sends daily review emails or notifications based on user preferences
6. Users can access their library through the web or mobile app for review and further annotation
7. The spaced repetition algorithm determines which highlights to resurface and when
8. Users can access Ghostreader for document-level analysis or selected text analysis
9. Ghostreader provides AI-generated responses based on the selected prompt and content
10. Users can customize Ghostreader prompts to tailor the AI assistant to their specific needs
11. Ghostreader responses for document-level queries appear in the Document Note field

Integrations:
- E-readers: Kindle, Kobo
- Read-it-later apps: Instapaper, Pocket
- Note-taking apps: Evernote, OneNote
- PDF readers: PDF Expert, Notability
- RSS readers: Feedly, Inoreader
- Social media: Twitter
- Productivity tools: Notion, Roam Research

Use of AI:
Readwise incorporates AI technology through its Ghostreader feature, which utilizes GPT-3.5 to power the AI assistant. It provides contextual information and insights based on user prompts, allowing for customization of AI interactions through user-defined prompts. The AI offers multi-level text analysis from individual words to entire documents.

AI foundation model:
Ghostreader is powered by GPT-3.5, enabling contextual understanding and generation of responses to user queries and prompts.

Target users:
- Avid readers and lifelong learners
- Students and researchers
- Knowledge workers and professionals
- Content creators and writers
- Book club members and reading groups

How to access:
Users can access Readwise through its web platform or mobile applications. The Ghostreader feature is integrated into the main interface and can be activated using keyboard shortcuts on the web version or through context menus on both web and mobile platforms.