# OSHA-NIOSH Heat Safety Tool — user reviews > 119 indexed App Store user reviews of OSHA by Centers For Disease Control and Prevention, rated 2.60/5 from 314 ratings. - Source: https://appshunter.io/ios/app/osha-niosh-heat-safety-tool/id1239425102/reviews - App overview in markdown: https://appshunter.io/ios/app/osha-niosh-heat-safety-tool/id1239425102.md - Rating breakdown: 5★ 97 · 4★ 14 · 3★ 17 · 2★ 24 · 1★ 162 ## What do users think of OSHA? Overall sentiment: negative **Pros** - 💡 Valuable tool for heat safety - 👍 Useful and informative - 👍 Precise and accurate - 👍 Great for tracking heat index - 👍 Helpful precautionary and first aid information - 👍 Available in Spanish **Cons** - 🐛 Crashes or doesn't load data - 🐛 Inaccurate or inconsistent temperature/heat index readings - 🐛 Doesn't work in Canada - 🐛 Frequent errors or connection issues - 🐛 Doesn't update or refresh properly - 🐛 Unreliable or not user-friendly **Commonly reported bugs** - App crashes on launch - Fails to load weather data - Closes immediately after opening - Doesn't work with latest iOS version - Location function doesn't work **Most requested features** - Add UV index - Provide notifications or alarms for heat index thresholds - Include OSHA heat safety guidelines and training - Add support for entering custom location data - Develop a watch app with notifications ## Newest reviews (12 of 119) ### 2/5 — Not updating/Loading *2025-06-20, version 3.7* App was perfect with location and temperatures. I loved the gauge to tell you if you were in danger or needed to take precaution. The past week it has not loaded or updated. Please fix. ### 2/5 — Constant Errors *2024-07-31* Ironically this app only seems to work when you aren’t in a danger zone for heat index. I use this app for work and every time time we check around noon or when we know the heat index should be high the app has an error. I have it two stars because when the app works it’s very good, but in an error state you can’t even look at the other tabs like symptoms. ### 4/5 — Watch app *2024-06-18, version 3.4.2* Need a watch app with notifications ### 4/5 — UV *2024-06-17, version 3.4.2* Will you be adding the UV index to the app? ### 1/5 — Immediately crashes. PLEASE FIX *2024-05-14, version 3.4.1* I used to recommend this all the time during trainings. Now it just immediately crashes. Please fix it ### 1/5 — Crashing *2024-05-14, version 3.4.1* The index tab crashes every time. This is just in the last month. Useless without that tab working. ### 1/5 — Doesn’t Work *2024-05-14, version 3.4.1* This app hasn’t worked for the past three weeks. Crashes as soon as it opens. ### 1/5 — Crashes *2024-05-14, version 3.4.1* App crashes when trying to load. ### 1/5 — No longer works. *2024-05-14* I've used this app for close to 11 years since I work outside. It's worked perfectly up until now. Now the app doesn't even open up correctly. It opens at immediately closes. I've tried deleting and reinstalling the app but it doesn't help. **Developer response:** Recently, this app experienced issues with the connection to the weather data source that is used in this app. We have released an update which will identify this issue should it occur again. The app should now be functioning again. We appreciate your understanding as we work to improve the app. ### 1/5 — App crashes *2024-05-13, version 3.4.1* We’ve downloaded this app on two separate IPhones. The app crashes 100% of the time when attempting to open. We would like to use the app, when will the CDC fix this bug-ridden program? ### 1/5 — App Issue *2024-05-11, version 3.4.1* The application worked fine for years, but recently opens then immediately closes. The app is to important not to work properly on my phone ### 1/5 — Crashes *2024-05-11, version 3.4.1* Crashes immediately ## Most critical reviews (10 lowest-rated) ### 1/5 — Garbage *2026-06-30, version 3.7* Doesnt work, will just copy the temp ### 1/5 — Too aggressive *2026-05-14, version 3.7* 65f = Potentially Dangerous? Get real. ### 1/5 — STOP ASKING FOR LOCATION *2026-04-30, version 3.7* If an app asks for location and the user says NO then the app should honor being told no! Obnoxiously it pops up every few seconds! ### 1/5 — Needs a lot of work *2024-07-07, version 3.5* Concept is great, but only having hourly forecast and not realtime does not help. ### 1/5 — App not working properly *2024-06-28, version 3.5* Haven’t been able to retrieve weather data in days. What’s up? ### 1/5 — Seems to be, not reliable *2024-06-18, version 3.4.2* This is always off and showing less heat, other apps more accurate in my opinion. Sometimes it just doesn’t work ### 1/5 — Not accurate *2024-06-17, version 3.4.2* Doesn’t work. Extreme risk but actual conditions are cold and rainy. ### 1/5 — Canada refuse use that Heat app *2024-06-09* I did install app but it’s notice said not accept in Canada in just USA only period.. useless deletes it!! ### 1/5 — Unusable *2024-06-04, version 3.4.2* I have been using this app for years, now it won’t connect to get weather data. Just keeps trying to connect. ### 1/5 — Connection Error *2024-06-04* We’re told to use this app at work and it never works right. First it wouldn’t open for weeks. It worked for a week after being updated and now it just won’t show any data. This is on both phones and the 15 other guys in my group. ## Most praised reviews (10 highest-rated) ### 5/5 — Valuable !! *2025-06-21, version 3.7* It’s a the right Tool! It’s useful and I’m smarter dealing with the heat. ( I’m proactively plan for this summer heat wave) ### 5/5 — Great tool for everyone *2024-08-02* I travel the country and have referred to this app in many places. It is always precise, accurate and very helpful. I love the precautionary, symptom and fist aide tabs….. Also available in Spanish so communication is not an issue. Love it and share it with everyone! ### 5/5 — Works for me *2024-08-01* I work outside , middle of day, middle of summer every year all year. Have had this app for about 5 months now and it is my go to. Allows me to avoid days that are in extreme, shows what symptoms to look out for in heat related health issues and what to do when they happen. Breaks it down hourly, the temp and “feels like” categories. It overall I like this app. ### 5/5 — It’s been updated *2024-07-19* Had an issue that wouldn’t allow me to open it. It’s fixed now so everything’s kosher on my end **Developer response:** Recently, this app experienced issues with the connection to the weather data source that is used in this app. We have released an update which will identify this issue should it occur again. The app should now be functioning again. We appreciate your understanding as we work to improve the app. ### 5/5 — It’s been updated *2024-05-25* Had an issue that wouldn’t allow me to open it. It’s fixed now so everything’s kosher on my end **Developer response:** Recently, this app experienced issues with the connection to the weather data source that is used in this app. We have released an update which will identify this issue should it occur again. The app should now be functioning again. We appreciate your understanding as we work to improve the app. ### 5/5 — Auto closes. *2024-05-25* *Update* The heat index app is now working as it should. Thank you for fixing it! App isn’t working, it auto closes, please fix so I can check the heat index again **Developer response:** Recently, this app experienced issues with the connection to the weather data source that is used in this app. We have released an update which will identify this issue should it occur again. The app should now be functioning again. We appreciate your understanding as we work to improve the app. ### 5/5 — App back to its trusted condition *2024-05-25, version 3.4.2* I am a safety manager and have used this for years. ### 5/5 — Back up and running - Thank you *2024-05-21, version 3.4.2* Thank you for the great Tool ### 5/5 — App Issue *2024-05-02* App will launch however once loaded it closes quickly. Application issue. **Developer response:** Recently, this app experienced issues with the connection to the weather data source that is used in this app. We have released an update which will identify this issue should it occur again. The app should now be functioning again. We appreciate your understanding as we work to improve the app. ### 5/5 — Simple, Great *2023-12-03, version 3.4.1* Exactly what I want. No junk. Wish they had a wind chill app, too! --- *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 2026-09-10.*