# Model Colors vs Scale Ratio

The clearest difference is rating: Model Colors at 4.6 against Scale Ratio's 3.7. Model Colors also leads on ratings volume (445 vs 3). Scale Ratio's advantage is review sentiment (83% vs 60%) and update cadence (fortnightly vs monthly). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Model Colors sells 4 in-app purchases, starting at $0.99 per month and Scale Ratio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Model Colors holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Model Colors has 445 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 60% of Model Colors'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.

Model Colors ships an update monthly, Scale Ratio fortnightly. The most recent releases landed on September 18, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | Model Colors | Scale Ratio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (445 ratings)](https://appshunter.io/ios/app/model-colors/id1200319954/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/scale-ratio/id1448744741/reviews) |
| Number of ratings | **445** | 3 |
| Positive reviews | 60.4% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 70 MB | 25 MB |
| Requires iOS | 26.0 | **10.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [D-Pointer Oy](https://appshunter.io/developer/433372709) | [Adrien Brecheteau](https://appshunter.io/developer/956859837) |

## What reviewers say

### Model Colors

[App page](https://appshunter.io/ios/app/model-colors/id1200319954)

This app helps hobbyists manage their paint collections for models. Track colors you own, colors you need, and easily share lists. Find similar colors and organize them into custom lists for different projects.

**Highlights:** Track owned and needed paint colors, Browse over 40,000 colors from various brands, Share color lists via email and messaging, Set favorite colors for quick access, Find similar colors using standards or calculations, Create custom color lists for projects

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month subscription | $0.99 | per month |
| 3 month subscription | $1.99 | per 3 months |
| 6 month subscription | $3.49 | per 6 months |
| 1 year subscription | $5.99 | per year |


### 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 Model Colors free?

Model Colors is free to download, with in-app purchases available.

### Is Scale Ratio free?

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

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

Model Colors is rated higher. Model Colors averages 4.6 out of 5 from 445 ratings, while Scale Ratio averages 3.7 from 3 ratings.

### Do Model Colors or Scale Ratio have ads?

Neither Model Colors nor Scale Ratio shows ads.

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

Model Colors ships an update monthly, and Scale Ratio fortnightly. Most recently, Model Colors was updated on September 18, 2026 and Scale Ratio on August 14, 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.*