Best O2 Sensor App

0+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated June 2026

From beginner-friendly picks to power-user tools, our O2 sensor app list covers 0+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.

Compare top O2 Sensor App (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesSep 2026
2Oximeter - Track Oxygen SpO2Oximeter - Track Oxygen SpO2Free4.5★ (547)NoYesSep 2026
3Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (425)NoYesSep 2026
4CO2 sensorCO2 sensorFree2.7★ (3)NoNoSep 2026
5Blood Oxygen App+Blood Oxygen App+Free4.1★ (474)YesYesSep 2026
6Temperature + Blood Oxygen appTemperature + Blood Oxygen appFree3.7★ (72)NoYesAug 2026
7OBDeleven – OBD2 car scannerOBDeleven – OBD2 car scannerFree4.4★ (1.5K)NoYesSep 2026
8FIXD OBD2 ScannerFIXD OBD2 ScannerFree4.6★ (26K)NoYesSep 2026

Top Picks for O2 Sensor App

Blood Oxygen App#1

Blood Oxygen App by AboutMe Apps, Inc.

SpO2 Level Monitor・Heart Rate
Editor's Choice
🏥 Medical
4.6😞(31K ratings)
FreeIn-App Purchases
#23in Medical
Blood Oxygen App screenshot 1
Blood Oxygen App screenshot 2
Blood Oxygen App screenshot 3
Blood Oxygen App screenshot 4
Blood Oxygen App screenshot 5
Blood Oxygen App screenshot 6

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.

What We Love

  • ⭐ Awesome app
  • ⭐ Very easy to use
  • ⭐ Helpful for monitoring health conditions
  • ⭐ Detailed data logging

Room to Improve

  • ❌ Doesn't accurately measure blood oxygen levels
  • ❌ Requires premium subscription for key features
  • ❌ Inconsistent and unreliable performance
  • ❌ Deceptive marketing and false advertising
  • ❌ No way to contact customer support

More O2 Sensor App apps to explore

FAQ about O2 Sensor App

What is the best O2 sensor app for iPhone?
Blood Oxygen App tops our O2 sensor app ranking as of June 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Yes — 20 of the top O2 sensor app we rank are free to download, including Blood Oxygen App and Oximeter - Track Oxygen SpO2.
Blood Oxygen App has no ads and offers in-app purchases, according to its App Store listing as of June 2026.
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.
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.