Overview
inf6 converts technical texts (books, lecture notes, papers) into a structured YAML library of sections and concepts. As you read, you can save ideas as knowledge nodes, refine them with ChatGPT, and everything you add is stored in your iCloud Drive. That means your knowledge framework grows continuously and stays in sync across both iPhone and Mac.
Main Features
iCloud Library (iPhone & Mac)
Your YAML books and nodes are kept in iCloud, so edits on iPhone show up on Mac and vice versa.
YAML Node Management
Save concepts as nodes, color-code them, and reorganize as your understanding deepens.
Full-text Search & Highlight
Find any phrase instantly and see it highlighted right in context.
ChatGPT Integration
Ask questions or request explanations for selected text — with cancel support while refining prompts.
Import / Export
Convert raw text to YAML locally, then export or back up your annotated knowledge.
Customizable Layout
Adjust font size and reading preferences to stay focused for long sessions.
iCloud Sync
inf6 uses your iCloud Drive (app container) to store YAML files. Use the same Apple ID on both devices and keep iCloud Drive enabled to:
- Start a book on iPhone, continue on Mac — all sections and nodes are the same.
- Edit or reorganize concepts anywhere; changes propagate automatically.
- Export at any time for backup or sharing.
Requires iCloud Drive enabled on both devices. Network conditions may affect sync timing.
Screenshots



Contact
For support or bug reports, email support@inf6.com.
See the Support page for setup (iCloud Drive, permissions) and FAQs.
Download
The app will be available on the App Store for both iPhone and Mac (via Mac build). The link will be posted here after review.