# CSiRebar vs Block Calculator Plus

The clearest difference is ads: CSiRebar at none against Block Calculator Plus's shown. CSiRebar also leads on update cadence (fortnightly vs every 2 months) and monetization model (free vs ad-supported). Block Calculator Plus's advantage is ratings volume (964 vs 1). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CSiRebar holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Block Calculator Plus has 964 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

CSiRebar ships an update fortnightly, Block Calculator Plus every 2 months. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | CSiRebar | Block Calculator Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/csirebar/id1435265034/reviews)** | [4.8 (964 ratings)](https://appshunter.io/ios/app/block-calculator-plus/id1494396680/reviews) |
| Number of ratings | 1 | **964** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 14 MB | 33 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Computers and Structures, Inc.](https://appshunter.io/developer/1119970032) | [Calc Hub, LLC](https://appshunter.io/developer/1494386814) |

## What reviewers say

### CSiRebar

[App page](https://appshunter.io/ios/app/csirebar/id1435265034)

This app helps structural and civil engineers quickly convert between bar sizes, steel area, and spacing requirements. It supports ASTM, Metric, and Imperial standards, offering various reinforcement layout options for design and analysis.

**Highlights:** Converts bar sizes, steel area, and spacing, Supports ASTM, Metric, and Imperial standards, Generates multiple reinforcement layouts, Allows combined reinforcement layouts, User-defined rules for bar selection, Provides alternative reinforcement layouts

**In-app purchases:** none


### Block Calculator Plus

[App page](https://appshunter.io/ios/app/block-calculator-plus/id1494396680)

This app provides nine specialized calculators to accurately estimate masonry materials for various construction projects. It helps calculate blocks, bricks, mortar, concrete, and gravel needed for walls and other structures, supporting multiple units of measurement.

**Highlights:** 9 concrete block estimation calculators, Estimate blocks, bricks, mortar, and fill, Supports US customary and metric units, Calculate for walls, concrete, and gravel, Area and volume calculation tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSiRebar free?

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

### Is Block Calculator Plus free?

Block Calculator Plus is free to download, with no in-app purchases.

### Which has better reviews, CSiRebar or Block Calculator Plus?

CSiRebar is rated higher. CSiRebar averages 5.0 out of 5 from 1 ratings, while Block Calculator Plus averages 4.8 from 964 ratings.

### Do CSiRebar or Block Calculator Plus have ads?

Block Calculator Plus shows ads; CSiRebar does not.

### Which is updated more often, CSiRebar or Block Calculator Plus?

CSiRebar ships an update fortnightly, and Block Calculator Plus every 2 months. Most recently, CSiRebar was updated on October 15, 2026 and Block Calculator Plus on October 21, 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.*