# Scala Architectural Scale vs Smart Propane Scale

The clearest difference is review sentiment: Scala Architectural Scale at 87% against Smart Propane Scale's 13%. Scala Architectural Scale also leads on rating (4.6 vs 2.4) and monetization model (free vs free with in-app purchases). Smart Propane Scale's advantage is iOS requirement (11.0 vs 15.6). 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 and Smart Propane 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 2.4. Both are backed by a comparable volume of ratings — 24 and 11 respectively. Written reviews point the same way: 87% of Scala Architectural Scale's written reviews are positive against 13% of Smart Propane Scale's.

Scala Architectural Scale ships an update every 4 months, Smart Propane Scale every 5 months. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Scala Architectural Scale | Smart Propane Scale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (24 ratings)](https://appshunter.io/ios/app/scala-architectural-scale/id1090018333/reviews)** | [2.4 (11 ratings)](https://appshunter.io/ios/app/smart-propane-scale/id1429427836/reviews) |
| Number of ratings | **24** | 11 |
| Positive reviews | **86.7% of reviews** | 12.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 47 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Noerah Alvi](https://appshunter.io/developer/1088349320) | [YSN Imports, Inc.](https://appshunter.io/developer/1429427835) |

## 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 |


### Smart Propane Scale

[App page](https://appshunter.io/ios/app/smart-propane-scale/id1429427836)

This utility app helps you monitor your propane levels to avoid running out unexpectedly. It provides real-time information on how much propane you have, eliminating guesswork and ensuring you're always prepared for activities like BBQs.

**Highlights:** Real-time propane level monitoring, Prevents running out of propane, Eliminates guesswork, Useful for BBQs and outdoor activities

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30lbs & 40lbs tank support | $1.99 | one-time |


## Frequently asked questions

### Is Scala Architectural Scale free?

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

### Is Smart Propane Scale free?

Smart Propane Scale is free to download, with in-app purchases available.

### Which has better reviews, Scala Architectural Scale or Smart Propane Scale?

Scala Architectural Scale is rated higher. Scala Architectural Scale averages 4.6 out of 5 from 24 ratings, while Smart Propane Scale averages 2.4 from 11 ratings.

### Do Scala Architectural Scale or Smart Propane Scale have ads?

Neither Scala Architectural Scale nor Smart Propane Scale shows ads.

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

Scala Architectural Scale ships an update every 4 months, and Smart Propane Scale every 5 months. Most recently, Scala Architectural Scale was updated on October 23, 2026 and Smart Propane Scale on October 17, 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.*