LearnHub: Private Study

LearnHub is your personal study. Bring articles and documents into one quiet reading space, pick up where you left off, and turn highlights into notes worth revisiting. Start with six tutorials and fourteen original articles in English and Chinese about AI, programming, product work, and learning. Read your way: Adjust type, size, spacing, and reading theme. Save your place, choose a Chinese or English system reading voice, highlight passages, and return to your notes in context. Learn in either language: Choose Simplified Chinese, English, or Follow System inside the app. The interface and built-in articles change immediately, while your imports and notes keep their original text. Translate foreign-language articles on demand and return to the source whenever you like. Build your library: Import web articles, pasted text, TXT, Markdown, text-based PDF, and Word (.docx) files. Scanned PDFs are not OCR'd, and imported document images and original layout are not preserved. Keep up with new ideas: Browse public items from Hacker News, the Hugging Face blog, arXiv AI papers, and GitHub projects with source links and timestamps. Choose interest tags, and optionally generate one AI study brief when you open or return to the app and today's public feeds have refreshed. This is not a scheduled background service. The GitHub list uses defined filters and total stars; it is not GitHub's official Trending page. Use AI when it helps: On supported devices, use Apple's on-device model, or configure your own AI provider for article review, study briefings, document organization, and translation. LearnHub explains what will be sent before using a third-party service. Availability and possible provider charges depend on your configuration. Local first: No account is required. Your imports, notes, reading positions, and saved AI results are primarily stored on your device. A custom API key stays in iOS Keychain. Cross-device cloud sync is not provided. The app is free to download. Some official Premium articles include a preview; a one-time lifetime purchase unlocks that official content. The App Store shows the actual price. Your own imported documents are not locked behind this purchase.