# Length vs Scala Architectural Scale

The clearest difference is price: Scala Architectural Scale at Free against Length's $0.99. Scala Architectural Scale also leads on update cadence (every 4 months vs every 11 months). Length's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.6). On ads and device support there is nothing between them.

Scala Architectural Scale is free to download; Length costs $0.99 up front. Scala Architectural Scale sells 1 one-off in-app purchase. Length asks for nothing beyond the download.

Length ships an update every 11 months, Scala Architectural Scale every 4 months. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Length | Scala Architectural Scale |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.6 (25 ratings)](https://appshunter.io/ios/app/scala-architectural-scale/id1090018333/reviews)** |
| Number of ratings | — | **25** |
| Positive reviews | — | 86.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 34 MB | 1 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Noerah Alvi](https://appshunter.io/developer/1088349320) |

## What reviewers say

### Length

[App page](https://appshunter.io/ios/app/length/id512188088)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Length free?

Length costs $0.99, with no in-app purchases.

### Is Scala Architectural Scale free?

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

### Do Length or Scala Architectural Scale have ads?

Neither Length nor Scala Architectural Scale shows ads.

### Which is updated more often, Length or Scala Architectural Scale?

Length ships an update every 11 months, and Scala Architectural Scale every 4 months. Most recently, Length was updated on October 18, 2026 and Scala Architectural Scale on October 5, 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.*