# RIDGID Sketch vs Scala Architectural Scale

The clearest difference is review sentiment: Scala Architectural Scale at 87% against RIDGID Sketch's 21%. Scala Architectural Scale also leads on rating (4.6 vs 3.8) and iOS requirement (15.6 vs 17.6). RIDGID Sketch's advantage is in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

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

Scala Architectural Scale holds the better App Store score, 4.6 against 3.8. Both are backed by a comparable volume of ratings — 9 and 24 respectively. Written reviews point the same way: 21% of RIDGID Sketch's written reviews are positive against 87% of Scala Architectural Scale's.

RIDGID Sketch ships an update every 3 months, Scala Architectural Scale every 4 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | RIDGID Sketch | Scala Architectural Scale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (9 ratings)](https://appshunter.io/ios/app/ridgid-sketch/id778548899/reviews) | **[4.6 (24 ratings)](https://appshunter.io/ios/app/scala-architectural-scale/id1090018333/reviews)** |
| Number of ratings | 9 | **24** |
| Positive reviews | 21.4% of reviews | **86.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 36 MB | 1 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RIDGID Software Solutions](https://appshunter.io/developer/444491225) | [Noerah Alvi](https://appshunter.io/developer/1088349320) |

## What reviewers say

### RIDGID Sketch

[App page](https://appshunter.io/ios/app/ridgid-sketch/id778548899)

Create precise project plans and annotate measurements directly onto photos. This tool can be used independently or paired with a laser distance meter for accurate data capture.

**Highlights:** Measurement calculation, Project planning, Photo annotation, Bluetooth connectivity, Drawing mode, Photo overlay mode

**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 RIDGID Sketch free?

RIDGID Sketch is free to download, with no in-app purchases.

### Is Scala Architectural Scale free?

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

### Which has better reviews, RIDGID Sketch or Scala Architectural Scale?

Scala Architectural Scale is rated higher. RIDGID Sketch averages 3.8 out of 5 from 9 ratings, while Scala Architectural Scale averages 4.6 from 24 ratings.

### Do RIDGID Sketch or Scala Architectural Scale have ads?

Neither RIDGID Sketch nor Scala Architectural Scale shows ads.

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

RIDGID Sketch ships an update every 3 months, and Scala Architectural Scale every 4 months. Most recently, RIDGID Sketch was updated on November 2, 2026 and Scala Architectural Scale on November 6, 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.*