# 《大国重器》 vs Learn Cryptography

The clearest difference is in-app purchases: 《大国重器》 at none against Learn Cryptography's 4. 《大国重器》 also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.1). On price and device support there is nothing between them.

Both are free to download. Learn Cryptography sells 4 in-app purchases, starting at $3.99 per 7 days. 《大国重器》 asks for nothing beyond the download.

## The numbers

| Metric | 《大国重器》 | Learn Cryptography |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-cryptography-encryption/id6742056134/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 318 MB | 67 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [十一点零五(北京)教育科技有限公司](https://appshunter.io/developer/1370300013) | [MEHMET CANKER (TR)](https://appshunter.io/developer/1565350155) |

## What reviewers say

### 《大国重器》

[App page](https://appshunter.io/ios/app/id1571859925)

**Features:** macOS Compatibility

**In-app purchases:** none


### Learn Cryptography

[App page](https://appshunter.io/ios/app/learn-cryptography-encryption/id6742056134)

Master the art and science of cryptology with an AI-powered learning app. Explore encryption, decryption, ciphers, and cryptographic systems through interactive tools, puzzles, and a structured curriculum. Ideal for beginners to professionals seeking to understand digital security.

**Highlights:** AI-powered tutor for step-by-step explanations, Interactive encryption and decryption tools, Cryptography playground for practical exercises, Gamified puzzles and challenges, Structured curriculum from beginner to advanced, 24/7 AI chat support for clarifications

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $8.90 | per year |
| Lifetime Subscription | $19.90 | one-time |


## Frequently asked questions

### Is 《大国重器》 free?

《大国重器》 is free to download, with no in-app purchases.

### Is Learn Cryptography free?

Learn Cryptography is free to download, with in-app purchases available.

### Do 《大国重器》 or Learn Cryptography have ads?

Learn Cryptography shows ads; 《大国重器》 does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*