# ReadySec vs ZeroDay Dev

The clearest difference is monetization model: ZeroDay Dev at free against ReadySec's free with in-app purchases. ReadySec's advantage is update cadence (every 2 days vs weekly) and rating (5.0 vs 4.8). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. ReadySec sells 11 in-app purchases, starting at $12.99 per month and ZeroDay Dev sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReadySec holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

ReadySec ships an update every 2 days, ZeroDay Dev weekly. The most recent releases landed on August 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | ReadySec | ZeroDay Dev |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/readysec/id6759893295/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/zeroday-dev/id6760129673/reviews) |
| Number of ratings | **7** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 8 MB | 69 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JOHN COLEMAN GREENWAY](https://appshunter.io/developer/1881473974) | [John Lawniczak](https://appshunter.io/developer/1882793043) |

## What reviewers say

### ReadySec

[App page](https://appshunter.io/ios/app/readysec/id6759893295)

Prepare for certification exams with practice questions and flashcards. Track your progress across exam domains and access detailed explanations for every answer. Offers flexible pricing with a free trial and one-time purchase options.

**Highlights:** Practice exams, Flashcards, Targeted domain study, Per-domain readiness scores, Progress tracking, Detailed answer explanations, 52 industry certifications

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $12.99 | per month |
| Microsoft Azure Administrator | $14.99 | one-time |
| ISC2 CCSP | $19.99 | one-time |
| ISC2 CGRC | $19.99 | one-time |
| ISACA CISM | $19.99 | one-time |
| GCP Cloud Security Engineer | $19.99 | one-time |
| AWS Security Specialty | $19.99 | one-time |
| AWS Advanced Networking Specialty | $19.99 | one-time |
| Azure Solutions Architect | $19.99 | one-time |
| ISC2 CISSP | $24.99 | one-time |
| ISACA CGEIT | $24.99 | one-time |


### ZeroDay Dev

[App page](https://appshunter.io/ios/app/zeroday-dev/id6760129673)

Learn secure coding and blockchain security through hands-on challenges and real-world exploit analysis. Practice building exploit intuition with interactive exercises and track your progress through curated learning paths. The app is designed for offline use, allowing you to learn anytime, anywhere.

**Highlights:** Hands-on coding challenges, Real-world exploit analysis, Interactive practice exercises, Curated learning tracks, Progress tracking and gamification, Offline-first functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Content | $4.99 | one-time |


## Frequently asked questions

### Is ReadySec free?

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

### Is ZeroDay Dev free?

ZeroDay Dev is free to download, with in-app purchases available.

### Which has better reviews, ReadySec or ZeroDay Dev?

ReadySec is rated higher. ReadySec averages 5.0 out of 5 from 7 ratings, while ZeroDay Dev averages 4.8 from 4 ratings.

### Do ReadySec or ZeroDay Dev have ads?

Neither ReadySec nor ZeroDay Dev shows ads.

### Which is updated more often, ReadySec or ZeroDay Dev?

ReadySec ships an update every 2 days, and ZeroDay Dev weekly. Most recently, ReadySec was updated on August 1, 2026 and ZeroDay Dev on September 18, 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.*