ERG for iOS vs AzCHER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
AzCHER
Facilitates communication and resource sharing among Arizona healthcare organizations during emergencies. Enables seamless cooperation to maintain optimal healthcare services when normal operations are disrupted.
- Emergency communication streams
- Resource sharing processes
- Inter-organizational collaboration
- Disaster preparedness
- Healthcare service continuity
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The function of the AzCHER mobile app is to develop effective streams of communication and processes for resource sharing among Arizona healthcare entities so that, in the event normal, day-to-day operations or standard operating procedures become disrupted or overwhelmed due to a large-scale emergency or disaster, participating organizations can cooperate and collaborate to continue delivering optimal healthcare services.
Screenshots
Verdict
The clearest difference is ratings volume: ERG for iOS at 64 against AzCHER's 2. ERG for iOS also leads on chart position (#127 vs unranked) and iOS requirement (12.0 vs 18.6). AzCHER's advantage is rating (5.0 vs 4.8). On price, review sentiment, 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.
AzCHER 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 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
ERG for iOS ships an update every 4 months, AzCHER every 2 months. Both last shipped on November 3, 2026.
| Parameter | ERG for iOS | AzCHER |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (64 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 64 — better | 2 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #127 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 27 MB | 55 MB |
| Age rating | 12+ | 4+ |
| Developer | Pipeline and Hazardous Materials Safety Administration | Arizona Hospital And Healthcare Association |
Customer experience
ERG for iOS
AzCHER
In-app purchases
ERG for iOS
No in-app purchases
AzCHER
No in-app purchases
