# Contex.st — Your knowledge, organized

> Your knowledge, organized (iPhone/iPad app by Memetic Research Laboratories LLC.)

- Source: https://appshunter.io/ios/app/contexst/id6745994409 (this page in markdown: same URL + `.md`)
- Developer: [Memetic Research Laboratories LLC](https://appshunter.io/developer/1814737557)
- Category: Productivity, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 18.4 · 128 MB
- Languages: Arabic, Catalan, Croatian, Czech, Danish, Dutch, English, French, German, Greek and 19 more
- Released: 2025-05-28
- Data updated: 2026-05-18
- User reviews in markdown: https://appshunter.io/ios/app/contexst/id6745994409/reviews.md

## What is Contex.st?

TRANSFORM ANY CONTENT INTO YOUR INTELLIGENT KNOWLEDGE BASE

Contex.st is the revolutionary AI-powered app that captures, summarizes, and organizes your digital content while letting you chat with your entire document collection. The only knowledge management app with built-in Nostr integration for decentralized sharing.

KEY FEATURES

Universal Content Capture
• Save from Safari, Photos, Files, and ANY iOS app via Share Extension
• Smart OCR extracts text from images and PDFs automatically
• Clean web article extraction without ads or clutter
• Batch processing for multiple items at once

AI-Powered Intelligence
• Chat with your entire document collection using advanced AI
• Get contextual answers with source citations
• Automatic summarization of any content
• Smart keyword extraction and categorization
• Entity recognition for people, places, organizations

Powerful Search & Organization
• Semantic search finds content by meaning, not just keywords
• Vector search discovers related documents automatically
• Smart collections that organize content intelligently
• Advanced filtering by content type, date, and entities
• Tag-based organization with AI suggestions

Decentralized Sharing via Nostr
• Share insights on censorship-resistant networks
• Multiple cryptographic identity support
• Connect to custom relay networks
• True content ownership - no corporate control

Privacy & Control
• Your data stays on your device with iCloud sync
• Choose your preferred AI providers
• No tracking or data harvesting
• End-to-end encryption for sensitive content

PERFECT FOR:
• Researchers building comprehensive knowledge bases
• Students organizing study materials and papers
• Professionals tracking industry insights and trends
• Content creators gathering inspiration and sources
• Anyone building a "second brain" for better productivity

WHY CONTEX.ST?
Unlike other document apps, Contex.st combines powerful AI capabilities with true data ownership. Chat with your documents using cutting-edge AI, organize with intelligent automation, and share your insights on decentralized networks - all while maintaining complete control over your information.

Your digital memory, intelligently organized, truly yours.

Download now and revolutionize how you capture, understand, and share knowledge!


## Version history (last 4 releases)

### 1.2.2 — 2025-09-06

Analysis of any document including related documents as part of the context.

Insights Tab keeps track of all document analysis sessions

Add any analysis session as context for AI Chat session

Bug Fixes.

### 1.2.1 — 2025-08-12

MAJOR UPDATE: AI-POWERED INTELLIGENCE ARRIVES!

This groundbreaking update transforms Contex.st from a simple content organizer into your intelligent knowledge companion. We've added powerful AI capabilities that let you chat with your documents, get instant summaries, and discover insights across your entire collection.

NEW: AI DOCUMENT CHAT
• Chat with your entire document collection using advanced AI models
• Ask questions like "What are the main themes in my research papers?" or "Find connections between these articles"
• Get contextual answers with direct citations to source documents
• Conversation history lets you build on previous discussions
• Works across ALL your captured content - web articles, PDFs, images, notes

NEW: INTELLIGENT SUMMARIZATION
• Automatic summaries for any captured content
• Choose between quick overviews or detailed analysis
• Smart keyword extraction highlights key concepts
• Entity recognition identifies important people, places, and organizations
• Perfect for quickly understanding long articles or research papers

NEW: SEMANTIC SEARCH & DISCOVERY
• Vector-powered search finds content by meaning, not just keywords
• Discover related documents you never knew were connected
• "Find similar" feature suggests relevant content automatically
• Cross-document analysis reveals patterns and themes
• Search your knowledge base like you're talking to a librarian

NEW: AI PROVIDER SELECTION
• Choose from multiple privacy-conscious AI providers
• Routstr integration via Nostr for maximum decentralization
• OpenRouter.ai support for access to 400+ models
• Local processing options keep your data on your device
• Configurable settings match your privacy preferences

NEW: ENHANCED CONTENT PROCESSING
• Advanced text extraction from images and PDFs
• HTML content cleaning preserves essential information
• Batch processing analyzes multiple documents simultaneously
• Background processing continues while you use other apps
• Smart categorization suggests relevant tags and collections

IMPROVED: NOSTR INTEGRATION
• Enhanced account management with multiple identity support
• Improved relay connection stability and performance
• Share AI-generated summaries directly to Nostr networks
• Custom signature support for branded content sharing
• Better error handling and connection recovery

IMPROVED: USER INTERFACE
• Redesigned chat interface optimized for document conversations
• New AI analysis indicators show processing status
• Enhanced search interface with semantic options
• Improved content capture flow with AI preview
• Better visual feedback for all AI operations

PERFORMANCE & STABILITY
• Significantly improved app startup time
• Optimized memory usage for large document collections
• Enhanced iCloud sync reliability
• Better background processing efficiency
• Reduced battery impact during AI operations

BUG FIXES & IMPROVEMENTS
• Fixed occasional crashes during content capture
• Resolved sync issues with large PDF files
• Improved OCR accuracy for handwritten text
• Better handling of complex web page layouts
• Enhanced accessibility throughout the app

HOW TO GET STARTED WITH AI FEATURES
1. Update to this version and open Contex.st
2. Go to Settings → AI & LLM Settings
3. Choose your preferred AI provider (Routstr or OpenRouter)
4. Start capturing content and try the new "Chat" feature
5. Ask questions about your documents and watch the magic happen!

This update represents months of development and testing, bringing enterprise-grade AI capabilities to your personal knowledge management. Whether you're a researcher analyzing papers, a student organizing notes, or a professional tracking industry trends, these new AI features will revolutionize how you interact with your digital content.

Your documents just got a lot smarter. Experience the future of personal knowledge management today!

### 1.0.1 — 2025-05-29

- Fixed a bug where initial nostr account was potentially not created before usage

### 1.0 — 2025-05-28

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-18.*