nook - Tech Reader

Read collected technical articles and research papers cleanly on your devices.

This app is a companion reader designed to work alongside the Mac version of nook. Feed registration, folder organization, article polling, and AI summarization are handled in the Mac app. Synced articles and briefings appear on your iPhone and iPad via iCloud for a quiet reading experience on the go.

Using sync requires signing in with the same Apple Account on both your Mac and iOS devices. Everything syncs privately through your personal iCloud storage (private database). No proprietary account is required.


■ Built for Technical Reading
- Native Markdown: Clean hierarchy, structured lists, tables, inline code, and block quotes.
- LaTeX Math Rendering: Crisp rendering of mathematical formulas and equations in research papers and articles.
- Expandable Image Viewer: Tap or pinch to zoom into architecture diagrams, charts, and technical figures.
- In-App Video Playback: Watch demonstration and technical videos directly within articles (streamed on demand).

■ Briefings and Citations
- Topic Overviews: Review key topics summarized across multiple articles in a feed or folder.
- Interactive Citations: Tap citation links to jump directly to referenced excerpts and source articles.

■ Organization and Offline Access
- Filter by Folders and Feeds: Filter articles by synced feeds and folders.
- Fast Search: Instantly search articles by title and list preview text.
- Automatic Offline Caching: Automatically caches the last 30 days of articles, images, and your favorites for offline reading on planes or subways.
- Two-Way Favorite Sync: Starred articles sync across your devices.

■ Language Settings
- The app UI language can be set independently under Settings to System, Japanese, or English (changing the UI language does not retranslate existing saved articles).
- The language used for AI summaries, briefings, and Ask responses is determined by the settings in the Mac app.


Getting Started
- This app cannot register feeds, create or edit folders, poll articles, or generate AI summaries and briefings on its own. These operations are performed in the Mac app.
- Data sync utilizes your personal iCloud storage.
- Even without a Mac or before syncing, you can test core reading features—including article layout, math and figure rendering, image zoom, search, and favorites—using 3 built-in sample technical articles (briefings, video playback, and iCloud sync are not included in sample mode).

Completely free. No in-app purchases, no subscriptions, no ads, and no user tracking.