Cortex: Local Markdown Brain

Cortex is a private, local-first Markdown workspace for iPhone and iPad. Your notes are real files you control, with fast editing, links, search, and on-device intelligence.

CORE FEATURES

• Create and organize plain Markdown notes
• Daily notes, tasks, templates, links, and backlinks
• Keyword search, Smart Search, knowledge graph, and canvas
• Save text and links from other apps with the Share Extension
• Create, search, and summarize notes with App Shortcuts and Siri
• Import, backup, and export your vault
• Use Apple Speech for dictation in supported languages

FREE

• A complete local Markdown vault
• Smart Search and knowledge graph
• Encrypted notes
• Basic dictation
• Local attachments up to 5 MB
• Import, backup, and export

CORTEX PLUS

• End-to-end encrypted sync across devices
• Ask, Recall, Insights, and semantic Connections
• Advanced dictation commands
• On-device OCR and audio transcription
• Attachments larger than 5 MB

Cortex requires no account and contains no ads or tracking. AI inference and embeddings run on your device. If you enable sync, Cortex encrypts your notes before sending authenticated ciphertext to the managed relay or a relay you configure; the relay cannot read note contents.

Terms of Use: https://cortex.jtrlabs.com/legal/terms.html Privacy Policy: https://cortex.jtrlabs.com/legal/privacy.html