# Scala Architectural Scale vs Block Calculator Plus

The clearest difference is in-app purchases: Block Calculator Plus at none against Scala Architectural Scale's 1. Block Calculator Plus also leads on ratings volume (967 vs 24) and rating (4.8 vs 4.6). Scala Architectural Scale's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Scala Architectural Scale sells 1 one-off in-app purchase. Block Calculator Plus asks for nothing beyond the download.

Block Calculator Plus holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Block Calculator Plus has 967 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 87% of Scala Architectural Scale's written reviews are positive against 100% of Block Calculator Plus's.

Scala Architectural Scale ships an update every 4 months, Block Calculator Plus every 2 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Scala Architectural Scale | Block Calculator Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (24 ratings)](https://appshunter.io/ios/app/scala-architectural-scale/id1090018333/reviews) | **[4.8 (967 ratings)](https://appshunter.io/ios/app/block-calculator-plus/id1494396680/reviews)** |
| Number of ratings | 24 | **967** |
| Positive reviews | 86.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 1 MB | 33 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Noerah Alvi](https://appshunter.io/developer/1088349320) | [Calc Hub, LLC](https://appshunter.io/developer/1494386814) |

## What reviewers say

### 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 |


### Block Calculator Plus

[App page](https://appshunter.io/ios/app/block-calculator-plus/id1494396680)

This app provides nine specialized calculators to accurately estimate masonry materials for various construction projects. It helps calculate blocks, bricks, mortar, concrete, and gravel needed for walls and other structures, supporting multiple units of measurement.

**Highlights:** 9 concrete block estimation calculators, Estimate blocks, bricks, mortar, and fill, Supports US customary and metric units, Calculate for walls, concrete, and gravel, Area and volume calculation tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Scala Architectural Scale free?

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

### Is Block Calculator Plus free?

Block Calculator Plus is free to download, with no in-app purchases.

### Which has better reviews, Scala Architectural Scale or Block Calculator Plus?

Block Calculator Plus is rated higher. Scala Architectural Scale averages 4.6 out of 5 from 24 ratings, while Block Calculator Plus averages 4.8 from 967 ratings.

### Do Scala Architectural Scale or Block Calculator Plus have ads?

Block Calculator Plus shows ads; Scala Architectural Scale does not.

### Which is updated more often, Scala Architectural Scale or Block Calculator Plus?

Scala Architectural Scale ships an update every 4 months, and Block Calculator Plus every 2 months. Most recently, Scala Architectural Scale was updated on October 26, 2026 and Block Calculator Plus on October 29, 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.*