# Rebar Calc vs Scale Ratio

The clearest difference is rating: Rebar Calc at 4.9 against Scale Ratio's 3.7. Rebar Calc also leads on in-app purchases (none vs 1) and ratings volume (644 vs 3). Scale Ratio's advantage is ads (none vs shown) and review sentiment (83% vs 60%). On price and device support there is nothing between them.

Both are free to download. Scale Ratio sells 1 one-off in-app purchase. Rebar Calc asks for nothing beyond the download.

Rebar Calc holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: Rebar Calc has 644 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 60% of Rebar Calc'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.

Rebar Calc ships an update every 2 months, Scale Ratio fortnightly. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Rebar Calc | Scale Ratio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (644 ratings)](https://appshunter.io/ios/app/rebar-calc/id1134344254/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/scale-ratio/id1448744741/reviews) |
| Number of ratings | **644** | 3 |
| Positive reviews | 60.0% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 13 MB | 25 MB |
| Requires iOS | 18.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Appco LLC (USA)](https://appshunter.io/developer/1027562416) | [Adrien Brecheteau](https://appshunter.io/developer/956859837) |

## What reviewers say

### Rebar Calc

[App page](https://appshunter.io/ios/app/rebar-calc/id1134344254)

This app simplifies concrete and rebar calculations for construction projects. It helps estimate rebar tonnage, mesh quantities, and concrete volume, and can even provide quotes for materials.

**Highlights:** Rebar tonnage calculation, Sheet and roll mesh estimation, Concrete volume estimator, Material quote generation, Adjustable lap amount, Configurable rebar/mesh size

**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 Rebar Calc free?

Rebar Calc is free to download, with no in-app purchases.

### Is Scale Ratio free?

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

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

Rebar Calc is rated higher. Rebar Calc averages 4.9 out of 5 from 644 ratings, while Scale Ratio averages 3.7 from 3 ratings.

### Do Rebar Calc or Scale Ratio have ads?

Rebar Calc shows ads; Scale Ratio does not.

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

Rebar Calc ships an update every 2 months, and Scale Ratio fortnightly. Most recently, Rebar Calc was updated on November 1, 2026 and Scale Ratio on October 25, 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.*