# chmod util vs VulnWatch

The clearest difference is in-app purchases: chmod util at none against VulnWatch's 3. chmod util also leads on ads (none vs shown) and device support (3 vs 1). VulnWatch's advantage is update cadence (every 4 weeks vs every 63 months). On price and iOS requirement there is nothing between them.

Both are free to download. VulnWatch sells 3 one-off in-app purchases. chmod util asks for nothing beyond the download.

chmod util ships an update every 63 months, VulnWatch every 4 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | chmod util | VulnWatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 63 months | **Every 4 weeks** |
| Size | 2 MB | 5 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mattia Righetti](https://appshunter.io/developer/1513841416) | [Naoyuki Sato](https://appshunter.io/developer/1714035733) |

## What reviewers say

### chmod util

[App page](https://appshunter.io/ios/app/chmod-util/id1581290826)

**Features:** Vision Pro support

**In-app purchases:** none


### VulnWatch

[App page](https://appshunter.io/ios/app/vulnwatch/id6470704548)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small gift | $4.99 | one-time |
| Medium gift | $9.99 | one-time |
| Large gift | $19.99 | one-time |


## Frequently asked questions

### Is chmod util free?

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

### Is VulnWatch free?

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

### Do chmod util or VulnWatch have ads?

VulnWatch shows ads; chmod util does not.

### Which is updated more often, chmod util or VulnWatch?

chmod util ships an update every 63 months, and VulnWatch every 4 weeks. Most recently, chmod util was updated on October 27, 2026 and VulnWatch on October 25, 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.*