I CHING 1 vs Retro Library
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
I CHING 1
Access ancient wisdom with this intuitive application. Focus on your question, simulate coin tosses, and receive guidance from the "Book of Changes." Features include changing line notation, related hexagrams, and saved readings.
- Intuitive I Ching experience
- Simulated coin tosses
- Hexagram readings
- Changing line notation
- Related Hexagrams
- Saved readings
- Light and dark mode
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A simple, intuitive I Ching experience. Access the intelligence of the "Book of Changes" by focusing on your question, then watch your hexagram develop line by line as you toss coins. I Ching 1.0 will deliver a reading based on the ancient oracle that can guide you to your next step. - Notation for changing lines - Related Hexagrams - Saved Readings - Light and dark mode
Retro Library
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RetroLibrary is a personal library app for collectors of retro computing books and magazines. Build a searchable collection, browse it like a bookshelf, and keep the important details with each title: author, publisher, edition, condition, rating, notes, cover art, value, lending status, and more. Whether you collect programming references, vintage hardware manuals, computer magazines, or computing history, RetroLibrary helps you organize the lot. Use ISBN and title lookup to fill in book details automatically, or scan the book (or shelf of books!) and let the machine learning recognize the details for you. Import your library in minutes not hours! Improve entries with cover art, and keep categories tidy. RetroLibrary also helps with collecting decisions. Use “Have I Got This?” to quickly check whether a book is already in your collection, on your wishlist, or still missing. If you don’t own it yet, add it straight to your wishlist. Features: - Track retro computing books and magazines in one library - Visual bookshelf browsing and traditional list view - ISBN scanning and metadata lookup - Shelf photo scanning with on-device OCR and Apple Intelligence assisted detection - Wishlist support - Ratings, condition, lending, notes, and value tracking - Automatic cover lookup - Library backup and restore tools - Quick ownership checking before you buy duplicates - Multiple ways to share, save and import your data. It's safe (and private)! - Runs on iPhone, iPad and Mac. RetroLibrary is designed for enthusiasts, collectors, researchers, and anyone building a personal archive of classic computing print material.
Screenshots
Verdict
The clearest difference is iOS requirement: I CHING 1 at 18.2 against Retro Library's 26.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | I CHING 1 | Retro Library |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.2 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Deleuse | John Kennedy |
In-app purchases
I CHING 1
No in-app purchases
Retro Library
No in-app purchases








