# Compendium Lab: Math & AI — Computer Science and Python

> Computer Science and Python (iPhone/iPad app by Byoungho Kim.)

- Source: https://appshunter.io/ios/app/compendium-lab-math-and-ai/id6791996424 (this page in markdown: same URL + `.md`)
- Developer: [Byoungho Kim](https://appshunter.io/developer/1888452963)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 106 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China)
- Released: 2026-07-24
- Data updated: 2026-10-11
- User reviews in markdown: https://appshunter.io/ios/app/compendium-lab-math-and-ai/id6791996424/reviews.md

## What is Compendium Lab?

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Compendium Lab Pro | $5.99 | one-time |



## Version history (last 2 releases)

### 1.1 — 2026-08-18

The app interface is now available in English, Japanese, and Chinese as well as Korean. Until now only the lessons themselves were translated, so the menus, settings, and study screens stayed in Korean whatever language you read in.

Chapter titles no longer flatten acronyms. SIMD, GPU, AI, and ML display correctly again.

Fixed iCloud sync. Reading progress, bookmarks, lab drafts, and recall notes now save to your private iCloud as intended — anything your device kept locally while sync was failing will upload on its own.

### 1.0 — 2026-07-24

No release notes.

## More apps by Byoungho Kim

- [폭풍 저택의 유언](https://appshunter.io/ios/app/id6761260813)
- [MemoGraph: Knowledge Graph](https://appshunter.io/ios/app/memograph-knowledge-graph/id6761298897)
- [PassportLens - Passport Photo](https://appshunter.io/ios/app/passportlens-passport-photo/id6761932283)
- [BurnCoach](https://appshunter.io/ios/app/burncoach/id6762002420)
- [PhotoTrail: Geotag & Trip Map](https://appshunter.io/ios/app/phototrail-geotag-and-trip-map/id6762003017)
- [Inner Journey: Self-Discovery](https://appshunter.io/ios/app/inner-journey-self-discovery/id6762345626)

All apps by Byoungho Kim: https://appshunter.io/developer/1888452963

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*