# Learn RSA Cryptography vs Bug Mastery

The clearest difference is in-app purchases: Learn RSA Cryptography at none against Bug Mastery's 1. Learn RSA Cryptography also leads on update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Bug Mastery sells 1 one-off in-app purchase. Learn RSA Cryptography asks for nothing beyond the download.

Learn RSA Cryptography ships an update every 3 days, Bug Mastery every 2 months. Both last shipped on September 9, 2026.

## The numbers

| Metric | Learn RSA Cryptography | Bug Mastery |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | — | Free |
| Size | 1 MB | 104 MB |
| Requires iOS | **16.0** | 17.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Govin Vatsan](https://appshunter.io/developer/1671454812) | [Akshay Bhasme](https://appshunter.io/developer/1757403977) |

## What reviewers say

### Learn RSA Cryptography

[App page](https://appshunter.io/ios/app/learn-rsa-cryptography/id1671454810)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bug Mastery

[App page](https://appshunter.io/ios/app/bug-mastery/id6544799509)

Learn ethical hacking and web security with comprehensive tutorials on finding and exploiting vulnerabilities in web applications, APIs, and networks. Covers over 100 topics from reconnaissance to advanced exploitation and professional reporting.

**Highlights:** 100+ topics on vulnerability discovery, Reconnaissance techniques, OWASP Top 10 coverage, Advanced exploitation methods, API and business logic flaw testing, Professional vulnerability reporting

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove_ads | $0.99 | one-time |


## Frequently asked questions

### Is Learn RSA Cryptography free?

Learn RSA Cryptography is free to download, with no in-app purchases.

### Is Bug Mastery free?

Bug Mastery is free to download, with in-app purchases available.

### Do Learn RSA Cryptography or Bug Mastery have ads?

Neither Learn RSA Cryptography nor Bug Mastery shows ads.

### Which is updated more often, Learn RSA Cryptography or Bug Mastery?

Learn RSA Cryptography ships an update every 3 days, and Bug Mastery every 2 months. Most recently, Learn RSA Cryptography was updated on September 9, 2026 and Bug Mastery on September 9, 2026.

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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.*