# Learn JavaScript Coding vs ZeroDay Dev

The clearest difference is price: ZeroDay Dev at Free against Learn JavaScript Coding's $2.99. ZeroDay Dev also leads on update cadence (weekly vs every 4 months). Learn JavaScript Coding's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

ZeroDay Dev is free to download; Learn JavaScript Coding costs $2.99 up front. ZeroDay Dev sells 1 one-off in-app purchase. Learn JavaScript Coding asks for nothing beyond the download.

Learn JavaScript Coding ships an update every 4 months, ZeroDay Dev weekly. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Learn JavaScript Coding | ZeroDay Dev |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/zeroday-dev/id6760129673/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | — | Free |
| Size | 172 MB | 80 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Shahbaz Khan](https://appshunter.io/developer/1479963383) | [John Lawniczak](https://appshunter.io/developer/1882793043) |

## What reviewers say

### Learn JavaScript Coding

[App page](https://appshunter.io/ios/app/learn-javascript-coding-ai/id6755811244)

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

**In-app purchases:** none


### 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 Learn JavaScript Coding free?

Learn JavaScript Coding costs $2.99, with no in-app purchases.

### Is ZeroDay Dev free?

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

### Do Learn JavaScript Coding or ZeroDay Dev have ads?

Neither Learn JavaScript Coding nor ZeroDay Dev shows ads.

### Which is updated more often, Learn JavaScript Coding or ZeroDay Dev?

Learn JavaScript Coding ships an update every 4 months, and ZeroDay Dev weekly. Most recently, Learn JavaScript Coding was updated on October 3, 2026 and ZeroDay Dev on October 6, 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.*