# Model Scaler vs Scale

The clearest difference is price: Model Scaler at Free against Scale's $2.99. Model Scaler also leads on ratings volume (12 vs 4) and iOS requirement (9.0 vs 12.0). Scale's advantage is rating (5.0 vs 2.9) and update cadence (every 8 days vs every 6 months). On ads, in-app purchases and device support there is nothing between them.

Model Scaler is free to download; Scale costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scale holds the better App Store score, 5.0 against 2.9. Both are backed by a comparable volume of ratings — 12 and 4 respectively. Written reviews point the same way: 40% of Model Scaler's written reviews are positive against 67% of Scale's.

Model Scaler ships an update every 6 months, Scale every 8 days. The most recent releases landed on June 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Model Scaler | Scale |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [2.9 (12 ratings)](https://appshunter.io/ios/app/model-scaler/id528641484/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/scale-o-tron/id1441824327/reviews)** |
| Number of ratings | **12** | 4 |
| Positive reviews | 40.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Monetization | **Free** | Paid |
| Size | 11 MB | 58 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woodland Scenics](https://appshunter.io/developer/528641487) | [Mizmovac, Inc](https://appshunter.io/developer/1441824326) |

## What reviewers say

### Model Scaler

[App page](https://appshunter.io/ios/app/model-scaler/id528641484)

This tool instantly converts measurements between U.S. Customary and Metric units for any modeling scale. It's designed to be fast, easy, and efficient for all types of scale modelers.

**Highlights:** Instant scale conversion, U.S. Customary to Metric, Metric to U.S. Customary, Supports any modeling scale, Fast and efficient

**Features:** macOS Compatibility

**In-app purchases:** none


### 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

**In-app purchases:** none


## Frequently asked questions

### Is Model Scaler free?

Model Scaler is free to download, with no in-app purchases.

### Is Scale free?

Scale costs $2.99, with no in-app purchases.

### Which has better reviews, Model Scaler or Scale?

Scale is rated higher. Model Scaler averages 2.9 out of 5 from 12 ratings, while Scale averages 5.0 from 4 ratings.

### Do Model Scaler or Scale have ads?

Neither Model Scaler nor Scale shows ads.

### Which is updated more often, Model Scaler or Scale?

Model Scaler ships an update every 6 months, and Scale every 8 days. Most recently, Model Scaler was updated on June 11, 2026 and Scale on June 1, 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.*