Blood Oxygen App

Blood Oxygen App

SpO2 Level Monitor・Heart Rate

31K ratings
838 reviews
#25 in top-grossing Medical
💪 Health & Fitness
🏥 Medical
Free
In-App Purchases

Details

  • Released
  • Updated

Features

Blood Oxygen App screenshot #1 for iPhone
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Blood Oxygen App screenshot #6 for iPhone
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Blood Oxygen App screenshot #8 for iPhone
iphone
watch
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About

Monitor blood oxygen levels and heart rate using your phone's camera or by syncing with your Apple Watch. Track vital signs, share data with your doctor, and access curated health articles. Includes breathing exercises and sleep reports.

Blood oxygen monitoring
Heart rate estimation via camera
Apple Watch sync
Data logging and export (PDF)
Box breathing exercises
Sleep reports
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What users say

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What's New in Blood Oxygen App

2.64.0

July 1, 2026

We’ve polished a few things to make the experience a little better. Thanks for using Blood Oxygen App!

Subscription plans

Premium year

Blood oxygen stats, sync and more

$39.991 Year
How to cancel Blood Oxygen App subscription ⁉️

Charts

Top Grossing

📉 25-1

Medical

This app dropped -1 position in Medical chart.

Last updated on August 9, 2026.

Top Free

📈 200+7

Medical

This app rose +7 positions in Medical chart.

Last updated on August 9, 2026.

Events

Read more about Blood Oxygen is back on Watch

Blood Oxygen is back on Watch

Measure with Health and Apple Watch

Aug 15, 2025 Sep 15, 2025

Read more about Celebrate World Oxygen Day

Celebrate World Oxygen Day

Celebrate it with Blood Oxygen app's new features

Oct 1, 2024 Nov 1, 2024

Read more about Celebrate World Heart Day

Celebrate World Heart Day

Celebrate World Heart Day with Blood Oxygen App

Sep 30, 2024 Oct 29, 2024

User reviews

SCAM

It doesn’t actually check your blood oxygen. I just guesses or you check it yourself with a device and manually enter it. It does NOTHING.

Arg stopped working After the Update of May/26

May 9/26 is the last reading this Paid for app gives. The only thing that seems to work is the “sleep report” the 1 thing I Don’t Want from this app. What is wrong with this app?

Very Disapointing

I thought this would give me my oxygen level. It does not. You can get your pulse (which I already can get through my watch) and monitor your respiration. I signed up for a year because of the good reviews. I tried to cancel the subscription about 10 minutes later when I realized I could not get my oxygen. Still on the hook for a year. I guess there is no 10 minute trail period. Recommend you sign up for monthly until you determine if you like the app.
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Does not work …not accurate at all ..don’t waste your money

Does not work

Inaccurate and misleading

The app is not clear that it’s just a tracker and the heart rate reading was wildly off compared to manually measuring

Developer apps

User experience

🐞

Reported Bugs

3 issues

App crashes and freezes frequently

Bug

Inaccurate heart rate and oxygen level readings

Bug

Compatibility issues with certain Apple Watch models

Bug

Requested Features

3 requests

Add audible/vibration alerts for low oxygen levels

Feature

Improve automatic oxygen level monitoring

Feature

Provide more control over reading frequency

Feature

FAQ

What does the Blood Oxygen App do?

This app allows you to monitor your blood oxygen levels and heart rate. You can use your phone's camera to estimate heart rate and sync with your Apple Watch for blood oxygen readings. It also provides features like data logging, export options, breathing exercises, and sleep reports.

How can I monitor my blood oxygen and heart rate with this app?

You can monitor your blood oxygen and heart rate by syncing with your Apple Watch. Additionally, the app can estimate your heart rate using your phone's camera. The data can then be logged and tracked within the app.

Is the Blood Oxygen App free to use?

The app is free to download and use for its basic features. However, a subscription is available to unlock additional functionalities. You can cancel your subscription at any time through the App Store.

What devices is the Blood Oxygen App compatible with?

The app is designed to work with iPhones and can sync with Apple Watch devices. Specific features like sleep reports require an Apple Watch Series 3 or later with watchOS 8.

Can I share my health data with my doctor?

Yes, you can easily log and export your blood oxygen and heart rate data into a PDF format. This allows you to share your vital sign readings with your doctor for their review.