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Contex.st
Contex.st is a privacy-focused digital memory extension for iOS that helps you capture, organize, and share content while maintaining complete ownership of your data.
Key Features
- Universal Content Capture: Save images, text, web pages, and PDFs via iOS Share Extension
- Smart Organization: Automatic categorization and tagging using on-device machine learning
- Private Image Analysis: Extract text from images with Vision framework while preserving privacy
- Decentralized Sharing: Publish and interact via the Nostr protocol with no central servers
- iMessage Integration: Share content directly within conversations using the Messages extension
- Multi-Account Management: Create and switch between different Nostr identities with secure key handling
- End-to-End Encryption: Strong security model with sophisticated key management
Technical Highlights
- Built with Swift and SwiftUI for native iOS performance
- On-device processing without server-side data analysis
- Secure multi-tier key storage system with optional encrypted CloudKit sync
- NIP-96 compliant image uploading for Nostr integration
- Zero tracking or data harvesting
Contex.st combines modern iOS capabilities with decentralized networking principles to deliver a seamless content capture and sharing experience while prioritizing user privacy and data sovereignty.