# ERG for iOS — Official USDOT ERG > Emergency Response Guidebook for hazardous materials incidents. (iPhone/iPad app by Pipeline and Hazardous Materials Safety Administration.) - Source: https://appshunter.io/ios/app/erg-for-ios/id1597142669 (this page in markdown: same URL + `.md`) - Developer: [Pipeline and Hazardous Materials Safety Administration](https://appshunter.io/developer/954888820) - Category: Reference - Price: Free - Rating: 4.80/5 from 64 App Store ratings · 13 written reviews indexed - Age rating: 12+ - Requires: iOS 12.0 · 27 MB - Languages: American English, French (France), European Spanish - Released: 2022-01-25 - Data updated: 2026-08-22 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/erg-for-ios/id1597142669/reviews.md ## What is ERG for iOS? 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. ## Key features - Indexed list of dangerous goods - ID number lookup - General hazard information - Recommended safety precautions - Multi-language support (English, French, Spanish) ## Chart rankings - #108 in Top Free · Reference (US App Store) ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/erg-for-ios/id1597142669/reviews.md ### 5/5 — Great app! *2026-06-24* Very good information, life saving. ### 4/5 — ERG 2024 *2025-07-28* Review No way to clear the recent list of chemicals. ### 5/5 — Add *2024-10-19* Great mapping, should integrate an auto wind direction ### 5/5 — The official ERG app! *2024-04-11, version 4.0* Great user friendly free resource! ### 5/5 — Great official resource! *2024-04-02, version 4.0* Happy to see the release of the 2024 version of the app! This official app is my go to when I need to reference the ERG. All the functionalities of the book without having to carry an extra item around. ### 5/5 — Great app *2024-04-02* Works well! Cool functionality. ### 5/5 — Excellent *2024-03-12* Works well! Content is always relevant ### 5/5 — A great resource *2023-11-21* Eventually, you remember what the placards mean. ### 5/5 — Under Rated Free App *2023-01-17* This app functions better than most paid versions that are available. ### 5/5 — Suggestions *2022-07-08* 5 stars cause it’s super convent and handy! Only suggestion is making the wind direction option easier to maneuver.. could be a bit confusing to use :) ## Frequently asked questions about ERG for iOS ### What is ERG for iOS? ERG for iOS is the official Emergency Response Guidebook from the USDOT PHMSA. It serves as a go-to resource for first responders during hazardous materials transportation incidents, providing quick access to critical information. ### Is ERG for iOS free to download? Yes, ERG for iOS is completely free to download and use. It does not have any in-app purchases or advertisements. ### What information does ERG for iOS provide? ERG for iOS provides an indexed list of dangerous goods, including their associated ID numbers, general hazards, and recommended safety precautions for initial response. ### What devices does ERG for iOS support? ERG for iOS is supported on iPhone, iPad, and iPod devices. ### How often is ERG for iOS updated? The app was last updated on October 30, 2024, with version 4.1.1, indicating regular maintenance and updates. ### What languages are available for ERG for iOS? ERG for iOS is available in English, French, and Spanish, making it accessible to a wider range of users. ### What is the age rating for ERG for iOS? ERG for iOS has an age rating of 12+, suggesting it contains content suitable for users aged 12 and older. ### How does ERG for iOS help in real-life scenarios? In scenarios like responding to an overturned truck with a hazmat placard, users can quickly identify the material and get guidance on how to respond effectively using the app. ## Version history (last 4 releases) ### 4.1.1 — 2024-10-30 Bug fix related to distance alerts on the map ### 4.1 — 2024-06-17 minor bug fixes ### 4.0 — 2024-04-01 Download the official PHMSA ERG app or update your app to get the latest features and updates from ERG2024, including: - Updated marks, labels, placards, and road trailer and rail car identification charts - New considerations for Electric Vehicle and Damaged, Defective or Recalled lithium battery fires - Updated Search by UN/Search by Name - Revisions to Orange Guides - See the "What's New" tab for a full list of updates. ### 3.2 — 2022-01-25 No release notes. ## Apps similar to ERG for iOS | App | Rating | Price | Category | | --- | --- | --- | --- | | [CAMEO Chemicals](https://appshunter.io/ios/app/cameo-chemicals/id1151912682) | 4.2 (26) | Free | Reference | | [HazMat - ERG 2024 Guidebook](https://appshunter.io/ios/app/hazmat-erg-2024-guidebook/id1486387187) | 4.6 (1,037) | Free | Reference | | [EV Rescue - Electric Vehicles](https://appshunter.io/ios/app/ev-rescue-electric-vehicles/id1597043306) | 3.5 (29) | Free | Reference | | [IRPG App (2025)](https://appshunter.io/ios/app/irpg-app-2025/id1562135017) | 4.2 (31) | Free | Reference | | [AskRail](https://appshunter.io/ios/app/askrail/id1142325064) | 4.1 (37) | Free | Reference | ## More apps by Pipeline and Hazardous Materials Safety Administration - [RIN Locator](https://appshunter.io/ios/app/rin-locator/id954888821) - [Pipeline Info Mgmt Mapping](https://appshunter.io/ios/app/pipeline-info-mgmt-mapping/id1191673181) - [oCFR](https://appshunter.io/ios/app/ocfr/id1228220888) - [NPMS Public Viewer](https://appshunter.io/ios/app/npms-public-viewer/id1232277603) - [DOT Chart 17](https://appshunter.io/ios/app/dot-chart-17/id1245251292) - [Hazmat Registration Search](https://appshunter.io/ios/app/hazmat-registration-search/id1459678141) All apps by Pipeline and Hazardous Materials Safety Administration: https://appshunter.io/developer/954888820 ## Related topics [erg](https://appshunter.io/ios/topics/erg) · [erg 2024](https://appshunter.io/ios/topics/erg-2024) · [emergency response guidebook 2024](https://appshunter.io/ios/topics/emergency-response-guidebook-2024) · [emergency response guidebook](https://appshunter.io/ios/topics/emergency-response-guidebook) · [egr 2024](https://appshunter.io/ios/topics/egr-2024) · [phmsa](https://appshunter.io/ios/topics/phmsa) · [2024 emergency response guide](https://appshunter.io/ios/topics/2024-emergency-response-guide) · [dot emergency response guidebook](https://appshunter.io/ios/topics/dot-emergency-response-guidebook) · [dot erg 2024](https://appshunter.io/ios/topics/dot-erg-2024) · [emergency response guide](https://appshunter.io/ios/topics/emergency-response-guide) · [erg app for first responders](https://appshunter.io/ios/topics/erg-app-for-first-responders) · [askrail](https://appshunter.io/ios/topics/askrail) · [erg guidebook](https://appshunter.io/ios/topics/erg-guidebook) · [ifsta hazmat 6](https://appshunter.io/ios/topics/ifsta-hazmat-6) · [hazmat erg 2024](https://appshunter.io/ios/topics/hazmat-erg-2024) · [hazmat book](https://appshunter.io/ios/topics/hazmat-book) · [hazmat erg](https://appshunter.io/ios/topics/hazmat-erg) · [hazmat](https://appshunter.io/ios/topics/hazmat) · [cargo decoder](https://appshunter.io/ios/topics/cargo-decoder) · [cameo chemicals](https://appshunter.io/ios/topics/cameo-chemicals) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*