# Blood Oxygen Level — user reviews > 39 indexed App Store user reviews of Blood Oxygen Level by Enrique Villahermosa Juara, rated 4.30/5 from 2,012 ratings. - Source: https://appshunter.io/ios/app/blood-oxygen-level/id1582509614/reviews - App overview in markdown: https://appshunter.io/ios/app/blood-oxygen-level/id1582509614.md - Rating breakdown: 5★ 1,459 · 4★ 195 · 3★ 101 · 2★ 48 · 1★ 209 ## What do users think of Blood Oxygen Level? Overall sentiment: negative **Pros** - 👍 Simple and easy interface - 🚀 Impressive work - 💡 Helpful for recording health conditions **Cons** - 🐛 Doesn't record anything - 🐛 Flickering and freezing issues - 🔋 Ads make it unusable - 🐛 Doesn't give accurate readings - 🐛 Doesn't sync with devices **Commonly reported bugs** - Doesn't record or track oxygen levels accurately - Compatibility issues with newer devices - Unexpected charges and sign-ups to other services **Most requested features** - Add a notes section for each entry - Improve instructions on using the app - Provide an ad-free subscription option ## Newest reviews (13 of 39) ### 3/5 — For Five Stars. *2025-08-15, version 1.22* I have several ways to keep track of my daytime Spo2. What this one could use is a place for a note with each entry. It's important that I keep track of conditions related to each reading. ### 2/5 — Useless *2025-04-12* No purpose ### 1/5 — Does not respond *2023-07-18, version 1.12* Disaster app why it is like that ### 1/5 — Fake *2023-07-11, version 1.12* This app is fake and don’t work. It gives u a reading that’s not even urs. Don’t waist ur time. ### 1/5 — Does not work. *2023-06-15, version 1.12* Does not record but once a day. HR not accurate. ### 1/5 — Worthless *2023-03-04, version 1.12* This app looks like it should record your blood oxygen, but it does not. It is only interface to record results from other devices. ### 2/5 — Ads *2023-02-06, version 1.12* Why is there ads for games have to watch a ads before i can check my heart rate?????? ### 1/5 — Unwanted sign up to games *2023-01-18, version 1.12* I signed up to this app and, having submitted my credit card details I was invited to join a completely unwanted games site before pressing ‘continue’ to the app. Although I unchecked the box giving my permission the games site appeared to register my name. I have no idea whether I am enrolled and there also appears to be no way to cancel either this app or check whether the games site has my payment details. Not happy. This is ‘cute to say the least. I could easily have pressed continue without unchecking permission if I had been in a hurry. ### 1/5 — This is like a joke not accurate *2023-01-16, version 1.12* The number shows is not accurate about the pulse of the heart obviously cannot believe this ### 1/5 — Only for healthy people *2022-12-10, version 1.12* I am on 5.5 liters of oxygen continuously when I get up and move my 02% drops into the 60% range this app says its in the 90% range if I used this app I would be dead trusting it ### 1/5 — Incompréhensible *2022-06-18* Comment les mesures sont elles prises ? Et comment prendre une nouvelle mesure ### 1/5 — Says needs a smart watch *2022-06-10, version 1.9* Doesn’t sync to device, you input it. Can’t find app that will work with an Apple Watch to monitor O2 levels. ### 1/5 — Garbage *2022-05-05, version 1.9* This app is %100 garbage ## Most critical reviews (10 lowest-rated) ### 1/5 — It doesn’t work *2025-04-02, version 1.21* It doesn’t record anything. ### 1/5 — Deceiving *2025-02-27, version 1.21* Nowhere on the App Store or in the details does it say you need to pay £30 a month. Definitely a scam ### 1/5 — Doesn’t work….. *2024-12-28, version 1.20* I have been using this for some time without any problems until recently. It’s just stopped working. It flickers and freezes, obviously needs an update. Just unusable currently. It’s been 2-3 months I thought give it time and the developer would fix it, they haven’t. ### 1/5 — Richard *2024-01-15, version 1.17* Can’t figure out how to make it work ### 1/5 — App *2024-01-05, version 1.17* Does not work. Do not charge me ### 1/5 — Incompréhensible *2023-10-04* Des mesures s’affichent, mais comment sont-elles prises ?? ### 1/5 — Avoid this app *2023-09-25, version 1.17* I downloaded this app in the belief it was an aid to measure blood oxygen. Instead I have been enrolled to stripeyoffers.com and being charged £1.50 per text for alerts of offers sent. This site is a scam…DO NOT DOWNLOAD. ### 1/5 — Horrible app *2023-09-20, version 1.17* This app does not do what it says to do! It does not give oxygen levels .... ### 1/5 — Ads make it useless *2023-09-04* This app is riddled with ads. 👎👎👎 ### 1/5 — Blood Readings *2023-08-13, version 1.17* Not getting my blood readings !! ## Most praised reviews (10 highest-rated) ### 5/5 — Excellent *2025-06-16, version 1.22* Impressive work!! ### 5/5 — Rty *2024-06-17, version 1.17* Uvhh ### 5/5 — Mrs *2023-12-12, version 1.17* I love it ### 5/5 — Improve *2023-10-22, version 1.17* It would help to have instructions on using app. ### 5/5 — Blood oxygen *2023-05-28, version 1.12* Very helpful to record my heart and oxygen helping me with health conditions, cancer, diabetes, angina after heart surgery ### 5/5 — Working nice *2021-10-11, version 1.6* This app reads watch and register on phone ### 5/5 — Bendabay *2021-09-07, version 1.4* It wont work ### 5/5 — Love it *2021-09-06, version 1.4* Love it ### 4/5 — Simple and easy *2023-02-23, version 1.12* Very simple and easy interface, straightforward. You do need an external device (watch/pulse ox) to read those stats and input manually (ie doesn’t connect to anything via bluetooth or sync with an app, if that’s what you’re looking for). I wish there was a way to “purchase” a subscription to be ad-free. On my device there so far was one full screen ad to x out of and a constant small box ad along the bottom of my screen. The addition of a small notes section with each logging would be nice. I’d like to note if who I was tracking had just had a nebulizer treatment, or was on any amount of supplemental oxygen, or asleep, etc when logging the information. The addition of that would guarantee a 5 star rating from me. Also, the main screen for this Shows your “average” for all logged O2 and pulse. Not your most recent readings/logged. Not a problem for me, as I’m strictly using this to log/record sats from through out the day. ### 3/5 — Same levels every day. *2025-09-14, version 1.23* Exactly the same pulse and oxygen level for every day for over a month. How is that possible? --- *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 2026-09-08.*