Best O2 Monitor Apps

250+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated November 2026

Every iPhone needs a few good o2 monitor apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top O2 Monitor Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesNov 2026
2Blood Oxygen App- WatchBlood Oxygen App- WatchFree4.2★ (710)NoYesNov 2026
3Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (430)NoYesNov 2026
4Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoNov 2026
5Blood Oxygen Monitor: SpO2Blood Oxygen Monitor: SpO2Free—NoYesNov 2026
6Heart Rate Monitor - Pulse BPMHeart Rate Monitor - Pulse BPMFree4.6★ (131K)YesYesNov 2026
7OxyRemote: Oxygen MonitorOxyRemote: Oxygen MonitorFree5.0★ (4)NoYesNov 2026
8Pulse Plus: Heart Rate MonitorPulse Plus: Heart Rate MonitorFree4.4★ (3.6K)YesYesNov 2026

Top Picks for O2 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
#29in 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 your blood oxygen and heart rate with this app. It allows you to track vital signs, sync with Apple Health, and export data for your doctor. Features include breathing exercises and sleep reports with an Apple Watch.

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 App- Watch#2

Blood Oxygen App- Watch by 199 Developments Private Limited

Log & track pulse o2 levels
Strong Contender
🏥 Medical
4.2😐(710 ratings)
FreeIn-App Purchases
Blood Oxygen App- Watch screenshot 1
Blood Oxygen App- Watch screenshot 2
Blood Oxygen App- Watch screenshot 3
Blood Oxygen App- Watch screenshot 4
Blood Oxygen App- Watch screenshot 5
Blood Oxygen App- Watch screenshot 6

Monitor and manage vital health metrics like blood oxygen, heart rate, and blood pressure. Receive automatic alerts for critical changes and utilize breathing exercises for relaxation. Syncs with Apple Health for a comprehensive view of your well-being.

What We Love

  • 🚀 Accurate pulse ox monitoring
  • 👍 Quick and easy to use
  • 🚀 Effortless Apple Watch sync
  • 👍 Intuitive and senior-friendly
  • 👍 Convenient sharing and alerts
  • 👍 More than just a tracker
  • 👍 Surprisingly good

Room to Improve

  • 🐛 Doesn't work on certain watches
  • 🐛 Premium features not working as expected
  • 🐛 Frequent false alarms
  • 💰 Expensive subscription
Blood Oxygen | O2 Monitor app+#3

Blood Oxygen | O2 Monitor app+ by Yana Shestakova

Saturation Level + Pulse Rate
Worth Considering
🏥 Medical
4.6(430 ratings)
FreeIn-App Purchases
Blood Oxygen | O2 Monitor app+ screenshot 1
Blood Oxygen | O2 Monitor app+ screenshot 2
Blood Oxygen | O2 Monitor app+ screenshot 3
Blood Oxygen | O2 Monitor app+ screenshot 4
Blood Oxygen | O2 Monitor app+ screenshot 5

Track your blood oxygen saturation (SpO2) and pulse rate daily. Log readings from your oximeter, monitor your normal range, and stay informed about your health. Features include a log diary, multi-profile support, and Apple Health synchronization.

More O2 Monitor apps to explore

FAQ about O2 Monitor

What are the best o2 monitor apps for iPhone?
Blood Oxygen App tops our o2 monitor apps ranking as of November 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Yes — 20 of the top o2 monitor apps we rank are free to download, including Blood Oxygen App and Blood Oxygen App- Watch.
Blood Oxygen App has no ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 250+ o2 monitor apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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