# chmod util vs Simple Ruler inch/cm

The clearest difference is price: chmod util at Free against Simple Ruler inch/cm's $0.99. chmod util also leads on device support (3 vs 1). Simple Ruler inch/cm's advantage is update cadence (daily vs every 63 months). On ads, in-app purchases and iOS requirement there is nothing between them.

chmod util is free to download; Simple Ruler inch/cm costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

chmod util ships an update every 63 months, Simple Ruler inch/cm daily. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | chmod util | Simple Ruler inch/cm |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 63 months | **Daily** |
| Monetization | — | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | 17.6 | **16.1** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mattia Righetti](https://appshunter.io/developer/1513841416) | [Systemiko Inc.](https://appshunter.io/developer/680630947) |

## What reviewers say

### chmod util

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

**Features:** Vision Pro support

**In-app purchases:** none


### Simple Ruler inch/cm

[App page](https://appshunter.io/ios/app/simple-ruler-inchcm/id6479048575)

This utility transforms your iPhone into a precise on-screen ruler for measuring in inches and centimeters. It offers a simple interface for quick measurements, serving as a handy tool for various tasks.

**Highlights:** On-screen ruler, Inch measurement, Centimeter measurement, Simple interface, Accurate measurements

**In-app purchases:** none


## Frequently asked questions

### Is chmod util free?

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

### Is Simple Ruler inch/cm free?

Simple Ruler inch/cm costs $0.99, with no in-app purchases.

### Do chmod util or Simple Ruler inch/cm have ads?

Neither chmod util nor Simple Ruler inch/cm shows ads.

### Which is updated more often, chmod util or Simple Ruler inch/cm?

chmod util ships an update every 63 months, and Simple Ruler inch/cm daily. Most recently, chmod util was updated on November 3, 2026 and Simple Ruler inch/cm on November 4, 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.*