# PocketEng vs 0Day

The clearest difference is in-app purchases: PocketEng at none against 0Day's 2. PocketEng also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. 0Day sells 2 in-app purchases, starting at $3.99 per month. PocketEng asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | PocketEng | 0Day |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/0day-cve-and-exploit-alerts/id6761655372/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | — | Freemium |
| Size | 2 MB | 10 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Vaibhav Dubey](https://appshunter.io/developer/1878344157) | [Richard Lous](https://appshunter.io/developer/1890695617) |

## What reviewers say

### PocketEng

[App page](https://appshunter.io/ios/app/pocketeng/id6760352319)

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

**In-app purchases:** none


### 0Day

[App page](https://appshunter.io/ios/app/0day-cve-and-exploit-alerts/id6761655372)

Receive immediate alerts for zero-day vulnerabilities, supply chain attacks, and compromised packages relevant to your specific technology stack. Get early warnings before they hit the news cycle, enabling proactive security measures.

**Highlights:** Zero-day vulnerability alerts, Supply chain attack notifications, Compromised package warnings, Stack-aware filtering, Early warning system, Push notifications, Full alert archive

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 0Day Pro | $3.99 | per month |
| 0Day Pro | $29.99 | per year |


## Frequently asked questions

### Is PocketEng free?

PocketEng is free to download, with no in-app purchases.

### Is 0Day free?

0Day is free to download, with in-app purchases available.

### Do PocketEng or 0Day have ads?

Neither PocketEng nor 0Day shows ads.

### Which is updated more often, PocketEng or 0Day?

PocketEng ships an update every 5 days, and 0Day every 5 days. Most recently, PocketEng was updated on October 6, 2026 and 0Day on October 22, 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.*