# Chemical Hazards Pocket Guide — user reviews > 37 indexed App Store user reviews of Chemical Hazards Pocket Guide by ThatsMyStapler Inc., rated 4.50/5 from 38 ratings. - Source: https://appshunter.io/ios/app/chemical-hazards-pocket-guide/id337472634/reviews - App overview in markdown: https://appshunter.io/ios/app/chemical-hazards-pocket-guide/id337472634.md - Rating breakdown: 5★ 25 · 4★ 10 · 3★ 1 · 2★ 1 · 1★ 1 ## Newest reviews (10 of 37) ### 5/5 — Excellent app *2012-12-02, version 1.4* Excellent app ### 5/5 — Great app! *2012-11-30, version 1.4* I got this app when I was taking my Hazmat Technician course it made researching chemicals much easier and was a great help during our final scenario. Several of my classmates also downloaded this app. ### 5/5 — Niosh *2012-10-29, version 1.4* Pretty good app A little confusing at first but once h get used to the program u r golden ### 5/5 — Great app in your pocket! *2012-09-24, version 1.3* I have had the iPad app on my first gen, and it worked great on some hazmat exercises. I thought about getting it on my 4s for a while and I was in a training and decided to get it. Well worth it, great data and fast access anytime. ### 5/5 — Excellent *2012-09-18, version 1.3* Excellent Source I use it almost everyday. ### 5/5 — Great application! *2012-08-10, version 1.3* Provides a good level of detail and is well organized. ### 5/5 — Great app *2012-08-07, version 1.3* A must have for environmental, safety, and health professionals in the field. ### 5/5 — Love it! *2012-03-22, version 1.3* I'm a hazmat tech and I love this app!! ### 5/5 — Fantastic *2012-02-04, version 1.3* App of the year! ### 5/5 — Excellent app *2011-12-07, version 1.3* Great information at my fingertips ## Most critical reviews (10 lowest-rated) ### 1/5 — App Doesn’t Work! *2025-03-28, version 2.3* When selecting a chemical the app immediately closes. ### 2/5 — Niosh pocket guide *2011-09-05, version 1.2.0* Not so efficient when looking up chemicals by name and cas #, wish I had gotten free app instead of spending $10 ### 3/5 — Fine *2011-12-15, version 1.3* Works but a little awkward. ### 4/5 — NIOSH pocket guide *2017-10-17, version 2.3* This is a great resource app to have at your side. It is easy to navigate and has all the information needed at your fingertips. I recommend this for anyone in the remediation or emergency response field. ### 4/5 — CalOSHA *2016-08-16, version 2.2* Please include CalOSHA PELs, as they are the best. Even Fed OSHA says that their own are outdated and we should follow Cali. Please please please include. ### 4/5 — Good App For IH *2015-02-19, version 2.0* Necessary info about a broad range of chems so well done on that front. For the price and ease of use in the field on tablet device I give top marks. Word to designers: awesome company name. ### 4/5 — Hazmat *2014-04-03, version 1.4* As a police officer, this app serves as a great tool for emergency first responders for HazMat spills, vehicle crashes etc. ### 4/5 — Handy reference *2013-01-21, version 1.4* It's quite useful to have portable (offline) access to NIOSH data when out in the field and this app does that ### 4/5 — Lab manager *2012-08-10, version 1.3* Great app ### 4/5 — Helpful *2011-10-11, version 1.2.0* Good app for environmental professionals. ## Most praised reviews (10 highest-rated) ### 5/5 — A Gem *2022-01-26, version 2.3* Quick to use. Accurate. Love it. ### 5/5 — HRC *2019-01-10, version 2.3* Great app ### 5/5 — Great pocket tool *2014-11-17, version 2.0* Best tool at your finger tips ### 5/5 — Great app *2014-10-16, version 1.4* Great app. Works awesome with wiser hand and hand these two app you can find out what ever you need ### 5/5 — Excellent! *2014-03-23, version 1.4* A very useful app ### 5/5 — NIOSH App *2013-08-17, version 1.4* This app has worked well for me in training as I am an instructor for Hazardous Materials teams from Awareness Level to Incident Commander. ### 5/5 — NIOSH *2013-08-16, version 1.4* Very helpful awesome. Thanks ### 5/5 — Excellent *2013-05-06, version 1.4* Very useful app. I am a HazMat specialist and have used this app many times. It's even quicker to reference than the book. ### 5/5 — Pocket guide *2013-01-11, version 1.4* Awesome app! I use it every day! ### 5/5 — Useful App *2013-01-06, version 1.4* Best Resource App on all my Apple devices. --- *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 2026-09-14.*