Best Free Oxygen Monitor Apps

250+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated September 2026

Whether you're new to free oxygen monitor or looking for an upgrade, our curated collection of 250+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Free Oxygen Monitor Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesSep 2026
2Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoSep 2026
3Oximeter - Track Oxygen SpO2Oximeter - Track Oxygen SpO2Free4.5★ (466)NoYesSep 2026
4Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (423)NoYesSep 2026
5Blood Oxygen Level: AnalyzerBlood Oxygen Level: AnalyzerFree3.9★ (190)NoYesSep 2026
6Heart Rate Monitor - Pulse BPMHeart Rate Monitor - Pulse BPMFree4.6★ (130K)YesYesSep 2026
7BloodOxygenMonitorBloodOxygenMonitorFree was $0.99NoYesAug 2026
8OxyRemote: Oxygen MonitorOxyRemote: Oxygen MonitorFree5.0★ (1)NoYesAug 2026

Top Picks for Free Oxygen Monitor

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
#25in 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
Blood Oxygen Level#2

Blood Oxygen Level by Enrique Villahermosa Juara

Record pulse and oxygen level
Strong Contender
🏥 Medical
4.3😞(2K ratings)
FreeAds
Blood Oxygen Level screenshot 1
Blood Oxygen Level screenshot 2
Blood Oxygen Level screenshot 3
Blood Oxygen Level screenshot 4
Blood Oxygen Level screenshot 5

Easily record your daily pulse and blood oxygen levels. Track your health statistics over time with simple data entry and clear visualizations. Requires an external device like a pulse oximeter or smartwatch for measurements.

What We Love

  • 👍 Simple and easy interface
  • 🚀 Impressive work
  • 💡 Helpful for recording health conditions

Room to Improve

  • 🐛 Doesn't record anything
  • 🐛 Flickering and freezing issues
  • 🔋 Ads make it unusable
  • 🐛 Doesn't give accurate readings
  • 🐛 Doesn't sync with devices
Oximeter - Track Oxygen SpO2#3

Oximeter - Track Oxygen SpO2 by AVTOSTROI, OOO

Blood O2 Monitor Tracker
Worth Considering
💪 Health & Fitness
4.5(466 ratings)
FreeIn-App Purchases
Oximeter - Track Oxygen SpO2 screenshot 1
Oximeter - Track Oxygen SpO2 screenshot 2
Oximeter - Track Oxygen SpO2 screenshot 3
Oximeter - Track Oxygen SpO2 screenshot 4

Monitor and record your blood oxygen saturation (SpO2) levels with this personal health tracking app. It offers detailed analytics, daily wellness guides, and data export options. Sync your health data with Apple Health for a comprehensive overview.

More Free Oxygen Monitor apps to explore

FAQ about Free Oxygen Monitor

What are the best free oxygen monitor apps for iPhone?
Blood Oxygen App tops our free oxygen monitor apps ranking as of September 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Blood Oxygen App has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ free oxygen monitor apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
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.