Vestas Doc vs ERG for iOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vestas Doc
Access and view comprehensive documentation for all Vestas products. Approved employees, partners, and subcontractors can apply for login credentials directly within the application.
- Browse Vestas product documentation
- View documentation for all products
- Login required for access
- Apply for login within the app
- Approved for employees, partners, and subcontractors
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Browse and view Vestas documentation for all products. Requires login. Approved employees, partners and sub-contractors can apply for login directly in the app.
ERG for iOS
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.
- Indexed list of dangerous goods
- ID number lookup
- General hazard information
- Recommended safety precautions
- Multi-language support (English, French, Spanish)
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PHMSA’s Emergency Response Guidebook (ERG) is the go-to resource for first responders during the initial phase of a dangerous goods or hazardous materials transportation incident. The ERG app is a valuable companion, based on the latest edition of the ERG, to help responders quickly access critical information at their fingertips. The app features an indexed list of dangerous goods, including their associated ID number, general hazards, and recommended safety precautions. In practical scenarios, such as responding to an overturned tractor trailer displaying a DOT hazmat placard, emergency responders can use the app to quickly identify the material associated with the placard and get guidance on how to respond effectively. Full versions available in English, French, and Spanish.
Screenshots
Verdict
The clearest difference is review sentiment: ERG for iOS at 100% against Vestas Doc's 30%. ERG for iOS also leads on rating (4.8 vs 1.9) and chart position (#111 vs unranked). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ERG for iOS holds the better App Store score, 4.8 against 1.9. Both are backed by a comparable volume of ratings — 18 and 64 respectively. Written reviews point the same way: 30% of Vestas Doc's written reviews are positive against 100% of ERG for iOS's.
Vestas Doc ships an update every 3 months, ERG for iOS every 4 months. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.
| Parameter | Vestas Doc | ERG for iOS |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (18 ratings) | 4.8 (64 ratings) — better |
| Positive reviews | 30.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 | 64 — better |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #111 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 143 MB | 27 MB |
| Age rating | 4+ | 12+ |
| Developer | Vestas Wind Systems AS | Pipeline and Hazardous Materials Safety Administration |
Customer experience
Vestas Doc
ERG for iOS
In-app purchases
Vestas Doc
No in-app purchases
ERG for iOS
No in-app purchases
