# CRSI Rebar Reference vs Goutru Security

The clearest difference is rating: Goutru Security at 5.0 against CRSI Rebar Reference's 3.3. Goutru Security also leads on in-app purchases (none vs 3) and update cadence (fortnightly vs every 5 weeks). CRSI Rebar Reference's advantage is ratings volume (16 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CRSI Rebar Reference sells 3 one-off in-app purchases. Goutru Security asks for nothing beyond the download.

Goutru Security holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: CRSI Rebar Reference has 16 ratings behind it against 1, so its average is the more settled of the two.

CRSI Rebar Reference ships an update every 5 weeks, Goutru Security fortnightly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CRSI Rebar Reference | Goutru Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (16 ratings)](https://appshunter.io/ios/app/crsi-rebar-reference/id1423271565/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/goutru-security/id1546167617/reviews)** |
| Number of ratings | **16** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 51 MB | 119 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Concrete Reinforcing Steel Institute](https://appshunter.io/developer/1423271564) | [GOUTRU LLC](https://appshunter.io/developer/1504141549) |

## What reviewers say

### CRSI Rebar Reference

[App page](https://appshunter.io/ios/app/crsi-rebar-reference/id1423271565)

Access essential data for reinforcing bars (rebar) including specifications, hook details, and marking requirements. This app serves as a quick reference for industry standards and links to online resources.

**Highlights:** ASTM standard reinforcing bar specifications, Standard hook details (90, 135, 180 degrees), Stirrup/tie hook details, ASTM reinforcing bar marking requirements, Minimum yield and tensile requirements, Links to CRSI online resources

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CRSI - Rebar Identifier Module | $2.99 | one-time |
| CRSI Development Length ACI | $4.99 | one-time |
| CRSI Development length AASHTO | $4.99 | one-time |


### Goutru Security

[App page](https://appshunter.io/ios/app/goutru-security/id1546167617)

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

**In-app purchases:** none


## Frequently asked questions

### Is CRSI Rebar Reference free?

CRSI Rebar Reference is free to download, with in-app purchases available.

### Is Goutru Security free?

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

### Which has better reviews, CRSI Rebar Reference or Goutru Security?

Goutru Security is rated higher. CRSI Rebar Reference averages 3.3 out of 5 from 16 ratings, while Goutru Security averages 5.0 from 1 ratings.

### Do CRSI Rebar Reference or Goutru Security have ads?

Neither CRSI Rebar Reference nor Goutru Security shows ads.

### Which is updated more often, CRSI Rebar Reference or Goutru Security?

CRSI Rebar Reference ships an update every 5 weeks, and Goutru Security fortnightly. Most recently, CRSI Rebar Reference was updated on October 21, 2026 and Goutru Security on October 24, 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.*