AskRail vs ERG for iOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AskRail
This app provides hazardous materials safety information for first responders dealing with rail incidents. It allows authorized personnel to query railcar contents and offers critical data for emergency response. Access to advanced features requires verification and railroad sponsorship.
- Hazardous materials safety information
- Rail incident support
- Query railcar contents
- Emergency response data
- First responder tool
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The AskRail app is a hazardous materials safety tool for first responders who are first on scene or directly support the first on scene in the event of a rail incident. Access to certain features, including the ability to query railcar contents based on an equipment number, is restricted to authorized personnel. To obtain authorization to use the restricted features, you must assert that you are a first responder, provide information about your emergency response agency, and identify a supervisor who can attest to your first responder duties. You also must obtain sponsorship from a Class I railroad. This process may take up to several weeks. AskRail is a collaborative effort among all North American Class I railroads, the Association of American Railroads, Railinc Corp., and the Transportation Technology Center, Inc. For more information about AskRail please visit: www.askrail.us.
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 rating: ERG for iOS at 4.8 against AskRail's 4.1. ERG for iOS also leads on review sentiment (100% vs 58%) and chart position (#154 vs unranked). On price, ratings volume, update cadence and ads 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 4.1. Both are backed by a comparable volume of ratings — 37 and 64 respectively. Written reviews point the same way: 58% of AskRail's written reviews are positive against 100% of ERG for iOS's.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on July 21, 2026 and September 22, 2026 respectively.
| Parameter | AskRail | ERG for iOS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (37 ratings) | 4.8 (64 ratings) — better |
| Positive reviews | 58.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 37 | 64 — better |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #154 — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 27 MB |
| Age rating | 12+ | 12+ |
| Developer | Association of American Railroads | Pipeline and Hazardous Materials Safety Administration |
Customer experience
AskRail
ERG for iOS
In-app purchases
AskRail
No in-app purchases
ERG for iOS
No in-app purchases







