# TVA Safe Work vs ERG for iOS

The clearest difference is update cadence: ERG for iOS at every 4 months against TVA Safe Work's every 59 months. ERG for iOS also leads on ratings volume (64 vs 4) and chart position (#190 vs unranked). TVA Safe Work's advantage is rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

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

TVA Safe Work holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ERG for iOS has 64 ratings behind it against 4, so its average is the more settled of the two.

TVA Safe Work ships an update every 59 months, ERG for iOS every 4 months. The most recent releases landed on September 10, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | TVA Safe Work | ERG for iOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/tva-safe-work/id1490918287/reviews)** | [4.8 (64 ratings)](https://appshunter.io/ios/app/erg-for-ios/id1597142669/reviews) |
| Number of ratings | 4 | **64** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 4 months** |
| Monetization | Free | Free |
| Best chart rank | — | **#190** |
| Size | 51 MB | 27 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Tennessee Valley Authority](https://appshunter.io/developer/440331546) | [Pipeline and Hazardous Materials Safety Administration](https://appshunter.io/developer/954888820) |

## What reviewers say

### TVA Safe Work

[App page](https://appshunter.io/ios/app/tva-safe-work/id1490918287)

Access essential safety procedures and documentation for work tasks. This app provides TVA employees and contractors with quick, portable access to the latest safety documents, helping to mitigate risks associated with potential hazards.

**Highlights:** View safety procedures, Access hazard documentation, Portable safety information, Latest published documents, For TVA employees and contractors

**Features:** macOS Compatibility

**In-app purchases:** none


### ERG for iOS

[App page](https://appshunter.io/ios/app/erg-for-ios/id1597142669)

**Currently charting:** #190 Top Free · Reference (US App Store)

This app provides first responders with quick access to critical information for hazardous materials transportation incidents. It features an indexed list of dangerous goods, including ID numbers, hazards, and safety precautions, aiding in effective response.

**Highlights:** Indexed list of dangerous goods, ID number lookup, General hazard information, Recommended safety precautions, Multi-language support (English, French, Spanish)

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

**In-app purchases:** none


## Frequently asked questions

### Is TVA Safe Work free?

TVA Safe Work is free to download, with no in-app purchases.

### Is ERG for iOS free?

ERG for iOS is free to download, with no in-app purchases.

### Which has better reviews, TVA Safe Work or ERG for iOS?

TVA Safe Work is rated higher. TVA Safe Work averages 5.0 out of 5 from 4 ratings, while ERG for iOS averages 4.8 from 64 ratings.

### Do TVA Safe Work or ERG for iOS have ads?

Neither TVA Safe Work nor ERG for iOS shows ads.

### Which is updated more often, TVA Safe Work or ERG for iOS?

TVA Safe Work ships an update every 59 months, and ERG for iOS every 4 months. Most recently, TVA Safe Work was updated on September 10, 2026 and ERG for iOS on September 22, 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.*