Best Blood Oxygen Watch Apps

250+ iOS apps curated and reviewed

4.0 avg rating
19 free apps
Updated November 2026

Finding the right blood oxygen watch apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Blood Oxygen Watch Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesNov 2026
2Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (431)NoYesNov 2026
3SPO2er: Blood Oxygen on WatchSPO2er: Blood Oxygen on Watch$0.994.9★ (10)NoNoOct 2026
4O2 Buddy: Blood Oxygen SpO2O2 Buddy: Blood Oxygen SpO2Free was $0.994.8★ (140)NoYesNov 2026
5Blood Oxygen Monitor: SpO2Blood Oxygen Monitor: SpO2Free5.0★ (1)NoYesNov 2026
6Blood Oxygen App- WatchBlood Oxygen App- WatchFree4.2★ (712)NoYesNov 2026
7Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoNov 2026
8Blood OxygenBlood OxygenFree3.9★ (128)NoNoNov 2026

Top Picks for Blood Oxygen Watch

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
#24in Medical
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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 | O2 Monitor app+#2

Blood Oxygen | O2 Monitor app+ by Yana Shestakova

Saturation Level + Pulse Rate
Strong Contender
🏥 Medical
4.6(431 ratings)
FreeIn-App Purchases
Blood Oxygen | O2 Monitor app+ screenshot 1
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Track your blood oxygen saturation (SpO2) and pulse rate with daily logging and reminders. Syncs with Apple Health and supports Apple Watch for comprehensive health monitoring. Offers multi-profile support for family members.

SPO2er: Blood Oxygen on Watch#3

SPO2er: Blood Oxygen on Watch by Kevin Edwards

SPO₂ Monitoring from HealthKit
Worth Considering
💪 Health & Fitness
4.9(10 ratings)
$0.99
#61in Health & Fitness
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Visualize your blood oxygen levels with clear graphs and historical data. This app syncs with HealthKit to display your latest readings, 24-hour trends, and past samples on your iPhone and Apple Watch. It prioritizes privacy with no accounts, ads, or data sharing.

More Blood Oxygen Watch apps to explore

FAQ about Blood Oxygen Watch

What are the best blood oxygen watch apps for iPhone?
Blood Oxygen App tops our blood oxygen watch apps ranking as of November 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Yes — 19 of the top blood oxygen watch apps we rank are free to download, including Blood Oxygen App and Blood Oxygen | O2 Monitor app+.
Blood Oxygen App has no ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 250+ blood oxygen watch apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.