# Blood Oxygen — user reviews > 20 indexed App Store user reviews of Blood Oxygen by Apple, rated 3.90/5 from 128 ratings. - Source: https://appshunter.io/ios/app/blood-oxygen/id1505627452/reviews - App overview in markdown: https://appshunter.io/ios/app/blood-oxygen/id1505627452.md - Rating breakdown: 5★ 70 · 4★ 16 · 3★ 16 · 2★ 8 · 1★ 18 ## Is Blood Oxygen safe? Blood Oxygen appears mostly safe based on user ratings. The AppsHunter Safety Score for Blood Oxygen is 77 out of 100. This assessment is based on 128 user ratings, with an App Store average of 3.9 out of 5. Of 128 App Store ratings, 67.2% point to a safe experience, 12.5% suggest some concerns, and 20.3% point to a risky experience. ## Is Blood Oxygen legit? Blood Oxygen appears to be a legitimate app. The AppsHunter Legitimacy Score for Blood Oxygen is 95 out of 100 points across 7 verification signals from App Store and developer data. ## Newest reviews (2 of 20) ### 1/5 — Inactive blood oxygen *2021-11-14, version 1.1* Hello, why the Blood Oxygen Program and the ECG program do not work in the Watch Series 6 in Iran. We, who provide watches with so much effort, should not be able to use its facilities. It is our right to use technologies. ### 1/5 — Bad *2021-10-28, version 1.1* Doesn’t work on Siris 3 ## Most critical reviews (10 lowest-rated) ### 1/5 — Why this app doesn’t work on Apple Watch serie 4 *2022-03-12, version 1.1* Why ### 1/5 — Can’t get on my watch *2022-03-07, version 1.1* This is frustrating. How do I get this on my watch? I have followed all the instructions. ### 1/5 — Australia ability to use? *2022-03-02, version 1.1* Trying to download from Australia iPhone app says must download via Apple Watch Go to Apple Watch and click into the App Store to download and the App Store says must use iPhone So neither will download ### 1/5 — 18+ *2022-02-21, version 1.1* Anyone with a watch should be able to access HEALTH features. Blood oxygen levels are not inappropriate for anyone to see. ### 1/5 — Cannot Download *2022-02-09, version 1.1* Can I download on my iPhone XR or my Apple Watch ### 1/5 — Why??? *2022-02-08, version 1.1* I have an new apple SE watch and can’t have this app?!?! Make it available it could be really helpful for people who have asthma ### 1/5 — Can’t even download *2021-12-24, version 1.1* On my phone it says only available on watch for download; on my watch it says only available on the phone for download 🤦🏾‍♀️🤷🏾‍♀️ ### 1/5 — Unavailable on series 6 *2021-12-13, version 1.1* I saw it is unavailable on my watch which is series 6. No idea why although it is built in app. Tried to reset the watch and paired again but no chance to get it. ### 1/5 — Unable to download the app *2021-12-10, version 1.1* Not able to download the app tho my account is a US account and staying in a region eligible to download the app. Anyone could help? Hence, my brother downloaded it but I couldn’t!! ### 1/5 — Blood oxygen *2021-12-08, version 1.1* Doesn’t download on my Apple Watch or phone. Still struggling. ## Most praised reviews (8 highest-rated) ### 5/5 — Oxygen *2021-12-24, version 1.1* It should have heart and pulse ### 5/5 — Accurate *2021-12-13, version 1.1* It’s pretty accurate actually ### 5/5 — Nice and Simple *2021-09-30, version 1.1* It literally measures your blood oxygen. Nothing more, nothing less. That’s it. That’s the tweet. btw love the animation. ### 5/5 — Awesome! *2021-09-29, version 1.1* Great for taking care of your personal health recording! ### 3/5 — Needs a low oxy notification!!!! *2022-01-27, version 1.1* Major oversight? Why doesn’t this offer a low blood oxygen notification? Like how we get an AFIB or high heart rate notification if we have an Apple Watch? It would really help with COVID patients who are told they don’t need to go to the hospital until they reach a certain threshold. ### 3/5 — Functions *2021-11-25, version 1.1* I was wondering if the app could notify an emergency contact if the blood oxygen drops too low ### 3/5 — Could be much clearer about unmet requirements *2021-10-05, version 1.1* The app store and health app don't state which requirements are unmet. ### 3/5 — Almost but not quite useful *2021-09-30, version 1.1* This app would be great for pilots, but it’s nearly impossible to get a useful reading when I’m flying. It would be nice if it detected I was over a certain altitude (4,000 FT MSL?) and moving over a certain speed (75 knots?) if it would start sampling my blood oxygen more regularly and if it would start notifying me as I get in the lower 90% range to remind me to start supplemental oxygen. --- *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 2026-09-17.*