# Ruler+ Utility vs Scala Architectural Scale

The clearest difference is rating: Scala Architectural Scale at 4.6 against Ruler+ Utility's 3.0. Scala Architectural Scale also leads on review sentiment (87% vs 47%) and ads (none vs shown). Ruler+ Utility's advantage is iOS requirement (13.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Ruler+ Utility sells 1 one-off in-app purchase and Scala Architectural Scale sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scala Architectural Scale holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Scala Architectural Scale has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 47% of Ruler+ Utility's written reviews are positive against 87% of Scala Architectural Scale's.

Ruler+ Utility ships an update every 40 months, Scala Architectural Scale every 4 months. The most recent releases landed on October 14, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Ruler+ Utility | Scala Architectural Scale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/ruler-plus-utility/id1017729457/reviews) | **[4.6 (24 ratings)](https://appshunter.io/ios/app/scala-architectural-scale/id1090018333/reviews)** |
| Number of ratings | 2 | **24** |
| Positive reviews | 46.7% of reviews | **86.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 40 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 24 MB | 1 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kyungjin Lee](https://appshunter.io/developer/572393811) | [Noerah Alvi](https://appshunter.io/developer/1088349320) |

## What reviewers say

### 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 |


### Scala Architectural Scale

[App page](https://appshunter.io/ios/app/scala-architectural-scale/id1090018333)

This app allows users to measure printed architectural and engineering drawings directly on their device. It supports both known and unknown scales, offering fixed and variable scale options for precise measurements. Users can also select secondary units for quick conversions.

**Highlights:** Fixed and variable scale measurement, Supports unknown drawing scales, Secondary unit conversions (metric, decimal feet, feet/inches), Adjustable measurement precision, Extensive scale options for architectural, engineering, and metric drawings

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scala Full Version | $2.99 | one-time |


## Frequently asked questions

### Is Ruler+ Utility free?

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

### Is Scala Architectural Scale free?

Scala Architectural Scale is free to download, with in-app purchases available.

### Which has better reviews, Ruler+ Utility or Scala Architectural Scale?

Scala Architectural Scale is rated higher. Ruler+ Utility averages 3.0 out of 5 from 2 ratings, while Scala Architectural Scale averages 4.6 from 24 ratings.

### Do Ruler+ Utility or Scala Architectural Scale have ads?

Ruler+ Utility shows ads; Scala Architectural Scale does not.

### Which is updated more often, Ruler+ Utility or Scala Architectural Scale?

Ruler+ Utility ships an update every 40 months, and Scala Architectural Scale every 4 months. Most recently, Ruler+ Utility was updated on October 14, 2026 and Scala Architectural Scale on October 23, 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.*