# chmod util vs DNOR

The clearest difference is update cadence: DNOR at every 3 months against chmod util's every 63 months. DNOR also leads on iOS requirement (12.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

chmod util ships an update every 63 months, DNOR every 3 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | chmod util | DNOR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 63 months | **Every 3 months** |
| Size | 2 MB | 140 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mattia Righetti](https://appshunter.io/developer/1513841416) | [Yee Hon Cong](https://appshunter.io/developer/1785787499) |

## What reviewers say

### chmod util

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

**Features:** Vision Pro support

**In-app purchases:** none


### DNOR

[App page](https://appshunter.io/ios/app/dnor/id6739514334)

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

**In-app purchases:** none


## Frequently asked questions

### Is chmod util free?

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

### Is DNOR free?

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

### Do chmod util or DNOR have ads?

Neither chmod util nor DNOR shows ads.

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

chmod util ships an update every 63 months, and DNOR every 3 months. Most recently, chmod util was updated on October 27, 2026 and DNOR 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.*