Compendium Lab: Math & AI

Study mathematics, computer science, and artificial intelligence in one offline-first app. Read 94 lessons across 18 chapters in Korean, English, Japanese, or Chinese, with equations and diagrams preserved in every edition. Save progress and bookmarks, and edit Python examples. Compatible examples execute entirely on your device. Study sessions turn reading into practice through cumulative review, closed-book recall, and hands-on implementation. WHAT YOU GET - 18 chapters, 94 lessons: linear algebra, calculus, probability, statistics, algorithms, data structures, computer vision, graph neural networks, and applied AI - Four language editions of every lesson, switchable from the reader toolbar - An on-device Python lab: edit any code block, run the compatible subset with no server round trip - Cumulative review and closed-book recall sessions built from each lesson - Progress, bookmarks, and lab drafts stored on device and synced through your own private iCloud PRICING Chapters 1 and 2 are free to read in full. A single one-time purchase unlocks all 18 chapters and the complete Python lab. No subscription, no ads, no account. PRIVACY No analytics, no advertising, no tracking. Lessons and the Python runtime are bundled in the app and work with no network connection. Support and privacy policy: https://blue-code.github.io/legal/compendium-lab/support.html