# Scale Ratio vs Slope Calculator

The clearest difference is rating: Slope Calculator at 4.3 against Scale Ratio's 3.7. Slope Calculator also leads on ratings volume (105 vs 3). Scale Ratio's advantage is update cadence (fortnightly vs every 14 months) and review sentiment (83% vs 58%). On price, ads, 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 Slope Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Slope Calculator holds the better App Store score, 4.3 against 3.7. That said, the two scores are not equally well evidenced: Slope Calculator has 105 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 58% of Slope Calculator's, so the app with the better star average is not the one people write more warmly about.

Scale Ratio ships an update fortnightly, Slope Calculator every 14 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Scale Ratio | Slope Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/scale-ratio/id1448744741/reviews) | **[4.3 (105 ratings)](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699/reviews)** |
| Number of ratings | 3 | **105** |
| Positive reviews | **83.3% of reviews** | 58.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 14 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 25 MB | 5 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adrien Brecheteau](https://appshunter.io/developer/956859837) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## 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 |


### Slope Calculator

[App page](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699)

Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.

**Highlights:** Calculate slope as angle, Calculate slope as percentage, Calculate slope as ratio, Input two sides of a right triangle, Calculate remaining triangle values, Intuitive and easy to use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is Scale Ratio free?

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

### Is Slope Calculator free?

Slope Calculator is free to download, with in-app purchases available.

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

Slope Calculator is rated higher. Scale Ratio averages 3.7 out of 5 from 3 ratings, while Slope Calculator averages 4.3 from 105 ratings.

### Do Scale Ratio or Slope Calculator have ads?

Neither Scale Ratio nor Slope Calculator shows ads.

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

Scale Ratio ships an update fortnightly, and Slope Calculator every 14 months. Most recently, Scale Ratio was updated on November 2, 2026 and Slope Calculator on November 7, 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.*