# Scale Ratio vs Model Paints

The clearest difference is rating: Model Paints at 4.3 against Scale Ratio's 3.7. Model Paints also leads on ratings volume (37 vs 3). Scale Ratio's advantage is ads (none vs shown) and update cadence (fortnightly vs every 2 months). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Scale Ratio sells 1 one-off in-app purchase and Model Paints sells 2 in-app purchases, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

Model Paints holds the better App Store score, 4.3 against 3.7. That said, the two scores are not equally well evidenced: Model Paints has 37 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 83% of Scale Ratio's written reviews are positive against 81% of Model Paints's, so the app with the better star average is not the one people write more warmly about.

Scale Ratio ships an update fortnightly, Model Paints every 2 months. The most recent releases landed on August 14, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Scale Ratio | Model Paints |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/scale-ratio/id1448744741/reviews) | **[4.3 (37 ratings)](https://appshunter.io/ios/app/model-paints/id1460523910/reviews)** |
| Number of ratings | 3 | **37** |
| Positive reviews | **83.3% of reviews** | 80.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 25 MB | 44 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adrien Brecheteau](https://appshunter.io/developer/956859837) | [Valentin Ozerov](https://appshunter.io/developer/953436126) |

## What reviewers say

### 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 |


### Model Paints

[App page](https://appshunter.io/ios/app/model-paints/id1460523910)

This app provides a comprehensive database of over 20,000 paints from numerous manufacturers, assisting scale model builders. It offers tools for browsing paint charts, matching colors from photos or the camera, and calculating scale conversions. The database is automatically updated with new colors and paint information.

**Highlights:** Extensive paint manufacturer database, Color matching from photos and camera, Scale calculation tools, Paint blending for new colors, Automatic database updates, Search by barcode, Paints lists support

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual subscription | $2.99 | per year |
| Remove Ads | $5.99 | one-time |


## Frequently asked questions

### Is Scale Ratio free?

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

### Is Model Paints free?

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

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

Model Paints is rated higher. Scale Ratio averages 3.7 out of 5 from 3 ratings, while Model Paints averages 4.3 from 37 ratings.

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

Model Paints shows ads; Scale Ratio does not.

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

Scale Ratio ships an update fortnightly, and Model Paints every 2 months. Most recently, Scale Ratio was updated on August 14, 2026 and Model Paints on August 19, 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.*