# Scale vs Scale Ratio

The clearest difference is price: Scale Ratio at Free against Scale's $4.99. Scale Ratio also leads on review sentiment (83% vs 67%) and device support (3 vs 1). Scale's advantage is rating (4.2 vs 3.7) and in-app purchases (none vs 1). On ratings volume, update cadence and ads there is nothing between them.

Scale Ratio is free to download; Scale costs $4.99 up front. Scale Ratio sells 1 one-off in-app purchase. Scale asks for nothing beyond the download.

Scale holds the better App Store score, 4.2 against 3.7. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews complicate that: 67% of Scale's written reviews are positive against 83% of Scale Ratio's, so the app with the better star average is not the one people write more warmly about.

Scale ships an update every 8 days, Scale Ratio fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Scale | Scale Ratio |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/scale-o-tron/id1441824327/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/scale-ratio/id1448744741/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | 66.7% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 25 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mizmovac, Inc](https://appshunter.io/developer/1441824326) | [Adrien Brecheteau](https://appshunter.io/developer/956859837) |

## What reviewers say

### Scale

[App page](https://appshunter.io/ios/app/scale-o-tron/id1441824327)

This tool simplifies scaling and unit conversions for creators. It offers a vast library of scales and units, allowing for seamless adjustments and precise calculations. Customize the interface to match your workflow and focus on your projects.

**Highlights:** Extensive database of scales and units, Customizable scales and units, Imperial and metric conversions, Fractional and decimal rounding, Conversion history, Customizable buttons

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

**In-app purchases:** none


### Scale Ratio

[App page](https://appshunter.io/ios/app/scale-ratio/id1448744741)

Easily convert distances between any scales for projects like architecture and model building. Input your measurements and desired scale to instantly calculate scaled distances.

**Highlights:** Convert distances between any scales, Supports architecture and modeling projects, Instant calculation of scaled distances, User-friendly input for distance and scale

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delete Ads in the app | $4.99 | one-time |


## Frequently asked questions

### Is Scale free?

Scale costs $4.99, with no in-app purchases.

### Is Scale Ratio free?

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

### Which has better reviews, Scale or Scale Ratio?

Scale is rated higher. Scale averages 4.2 out of 5 from 5 ratings, while Scale Ratio averages 3.7 from 3 ratings.

### Do Scale or Scale Ratio have ads?

Neither Scale nor Scale Ratio shows ads.

### Which is updated more often, Scale or Scale Ratio?

Scale ships an update every 8 days, and Scale Ratio fortnightly. Most recently, Scale was updated on October 24, 2026 and Scale Ratio on October 24, 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.*