# ERG 2020 — user reviews > 35 indexed App Store user reviews of ERG 2020 by National Library of Medicine, rated 4.10/5 from 53 ratings. - Source: https://appshunter.io/ios/app/erg-2020/id592158838/reviews - App overview in markdown: https://appshunter.io/ios/app/erg-2020/id592158838.md - Rating breakdown: 5★ 30 · 4★ 12 · 3★ 4 · 2★ 2 · 1★ 5 ## Newest reviews (10 of 35) ### 4/5 — Found a glitch *2025-09-22, version 3.1.6* Sulphur Molten UN 2448 can be classified as class 9 or class 4.1 the app only shows class 4.1 ### 4/5 — Good but needs help *2021-02-04, version 3.1.5* Data is easy to find. However, plume map pin can’t be moved nor is entering lat and long manually accurate. More than a mile off. This is a critical component when determining a valuation and downwind concerns. FIX IT ### 4/5 — Glossary *2020-11-03, version 3.0.84* Great app easy to use but a glossary feature would be a game changer ### 4/5 — Great tool! *2019-07-12, version 2.1* Was easy to use and quicker than thumbing through the book. Would like to see the ability to drop the waypoint on the map when plotting isolation distances, currently you can only input addresses. Also, the text bubble used with the waypoint does not display entire text, even when screen is rotated on iPhone 7. ### 4/5 — Great App, please fix icon *2015-11-08, version 1.1* The app is great but the icon is killing my OCD with the broken white border. Please please fix. That's would make this nearly perfect!!! ### 4/5 — Nice *2014-01-20, version 1.1* Great app ### 5/5 — Awesome, very handy. *2013-12-10, version 1.1* I like using this way better than the book. This is super fast and accurate. Gets me where I need to be very fast. ### 4/5 — Great app. *2013-10-27, version 1.0* Would have given 5 if it included appendix tables data. ### 5/5 — Easy to use *2013-06-19, version 1.0* I found that I could use this app faster then looking it up in the book. ### 4/5 — No more need for the book *2013-03-24, version 1.0* Love having the app on my phone. Great guide. Easy to locate materials. Would like to see a quick phone number guide on the front page in case of an emergency. ## Most critical reviews (10 lowest-rated) ### 1/5 — Paid version? *2023-06-18, version 3.1.6* I ain’t paying for a book I can get for free. Get bent. ### 1/5 — Unreadable guide pages *2020-05-18, version 2.1* My tab to browse the guide pages is unreadable and the chemicals are all bunched up on top of each other? ### 1/5 — ERG 2016 terrible *2019-06-20, version 2.1* ERG 2016 for iPhone doesn't work for the Xs Max. I have deleted it and reinstalled it with no luck. The beginning pages are all jumbled together and I can't use this. This is a great resource if it worked with this iPhone. Please fix or something. ### 1/5 — Locked *2016-05-19, version 2.0.1* I actually loved this app before the latest update... It's frozen/locked up... Can't delete or reinstall!👎🏽 ### 1/5 — Locked Up *2016-05-12, version 2.0.1* Latest update has locked up the app. Can't open it can't delete it. It won't do anything. ### 1/5 — Green pages tables missing? *2016-02-23, version 1.1* Cannot locate green pages tables anywhere on iPhone 5. Also those items supposed to be highlighted in green are not. A great reference yet without these features the hard copy book is still needed! Fail! ### 1/5 — H *2013-02-13, version 1.0* Doesn't Orkney on my ipad ### 3/5 — Print feature needed *2020-07-29, version 2.1* The app is really helpful but needs a print feature. ### 3/5 — Missing links *2020-06-13, version 2.1* When I search by un # the corresponding guide page has the “map”, “guide..”, “protective distance” tabs appear. If I go through the “browse guide pages” tab instead those tabs don’t appear on the guide page? ### 3/5 — Double Purchase *2013-08-07, version 1.0* This indicates it is compatible with iPhone AND iPad. I initially purchased and expected it to be downloadble for both. Instead I had to pay for iPad version also! This shouldnt require DOUBLE Purchase unless clearly specified!!!! I want to use both and a refund for one!!! ## Most praised reviews (10 highest-rated) ### 5/5 — Update *2020-05-19, version 2.1* When will the 2020 update be coming out? ### 5/5 — Excellent *2018-03-28, version 2.0.3* I work with the ERG 2016 for transport and this app is wonderful! No need to carry the book anymore! I recommend this app for any responder, carrier or user of any hazmat product! ### 5/5 — Great for Hazmat InService Training *2017-07-26, version 2.0.3* App works great.....don't work without it ### 5/5 — Incident Response *2017-07-20, version 2.0.3* Excellent app. Had to look up a UN number to determine safe distance for a spill today. Very handy in keeping my folks safe quickly. ### 5/5 — It has everything you need *2016-09-13, version 2.0.3* This is an awesome app ### 5/5 — Great Update and added functionality *2016-05-05, version 2.0.1* This update to the 2016 ERG, has all of the features we've been asking for. The added functionality of the map feature is great. Having all of the information on one screen on a tablet device is fantastic. However, we did find two critical mistakes that need to be corrected immediately. First, in the Table of Initial Isolation and Protective Action Distances, the Table 3 high wind category is mistakenly labeled as MPG. It should be MPH. Also, under the listing Anhydrous Ammonia, only the Small Spill information is provided for table 3. The Large Spill information for that green section is missing. If you use Ammonia, Anhydrous it is correct. That is all that we have found for mistakes so far. ### 5/5 — Perfect *2016-05-05, version 2.0* Can't complain about the price and has worked when I have practiced with it. ### 5/5 — The best ERG Ap *2014-10-07, version 1.1* Very easy to use. The book at your fingertips just better. ### 5/5 — Fantastic App!!!!!! *2014-08-01, version 1.1* Extremely useful and great at what it does! Highly recommend!!!!! ### 5/5 — App pour Matières dangereuses *2014-01-09, version 1.1* Très bien expliqué et pourrait être de grande aide en cas d'accident a la maison où pour le transport de matières dangereuses par camion . --- *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 2026-06-08.*