# Millimeter Pro vs Ruler+ Utility

The clearest difference is price: Ruler+ Utility at Free against Millimeter Pro's $3.99. Ruler+ Utility also leads on iOS requirement (13.0 vs 15.0). Millimeter Pro's advantage is rating (4.4 vs 3.0) and in-app purchases (none vs 1). On device support there is nothing between them.

Ruler+ Utility is free to download; Millimeter Pro costs $3.99 up front. Ruler+ Utility sells 1 one-off in-app purchase. Millimeter Pro asks for nothing beyond the download.

Millimeter Pro holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Millimeter Pro has 108 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 58% of Millimeter Pro's written reviews are positive against 47% of Ruler+ Utility's.

Millimeter Pro ships an update every 4 months, Ruler+ Utility every 40 months. The most recent releases landed on September 18, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Millimeter Pro | Ruler+ Utility |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.4 (108 ratings)](https://appshunter.io/ios/app/millimeter-pro-screen-ruler/id631810777/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/ruler-plus-utility/id1017729457/reviews) |
| Number of ratings | **108** | 2 |
| Positive reviews | **57.9% of reviews** | 46.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 40 months |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#188** | — |
| Size | 24 MB | 24 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VisTech.Projects LLC](https://appshunter.io/developer/620969851) | [Kyungjin Lee](https://appshunter.io/developer/572393811) |

## What reviewers say

### Millimeter Pro

[App page](https://appshunter.io/ios/app/millimeter-pro-screen-ruler/id631810777)

**Currently charting:** #188 Top Paid · Utilities (US App Store)

This app transforms your device into a versatile measuring tool. It allows for precise measurements of length, area, diameter, and angles using the touchscreen. Easily split objects into equal parts and switch between millimeters and inches for your convenience.

**Highlights:** Touchscreen ruler and tape measure, Measure length, area, diameter, and angles, Split objects into equal parts, Supports millimeters and inches, Estimate radius, Thread pitch gauge

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

**In-app purchases:** none


### Ruler+ Utility

[App page](https://appshunter.io/ios/app/ruler-plus-utility/id1017729457)

Transform your smartphone into a versatile measuring tool. Instantly measure the length of objects using your phone's screen, with options for fixed or scroll modes. Save your measurements and choose between centimeters or inches for precise results.

**Highlights:** Smartphone ruler, Fixed and scroll measurement modes, Save measurements, Centimeter and inch support, Fine-tune scale, Intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Millimeter Pro free?

Millimeter Pro costs $3.99, with no in-app purchases.

### Is Ruler+ Utility free?

Ruler+ Utility is free to download, with in-app purchases available.

### Which has better reviews, Millimeter Pro or Ruler+ Utility?

Millimeter Pro is rated higher. Millimeter Pro averages 4.4 out of 5 from 108 ratings, while Ruler+ Utility averages 3.0 from 2 ratings.

### Do Millimeter Pro or Ruler+ Utility have ads?

Ruler+ Utility shows ads; Millimeter Pro does not.

### Which is updated more often, Millimeter Pro or Ruler+ Utility?

Millimeter Pro ships an update every 4 months, and Ruler+ Utility every 40 months. Most recently, Millimeter Pro was updated on September 18, 2026 and Ruler+ Utility on September 3, 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.*