Best Oxygen Level Monitor Apps

242+ iOS apps curated and reviewed

4.2 avg rating
19 free apps
Updated September 2026

Looking for free oxygen level monitor apps? 19 of our 242+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Oxygen Level Monitor Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (424)NoYesSep 2026
2Blood Oxygen Level: AnalyzerBlood Oxygen Level: AnalyzerFree3.9★ (190)NoYesSep 2026
3Oximeter - Track Oxygen SpO2Oximeter - Track Oxygen SpO2Free4.5★ (547)NoYesSep 2026
4Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoSep 2026
5O2 Buddy: Blood Oxygen SpO2O2 Buddy: Blood Oxygen SpO2$0.994.6★ (46)NoYesSep 2026
6Blood Oxygen App+Blood Oxygen App+Free4.1★ (474)YesYesAug 2026
7Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesSep 2026
8Blood Oxygen Monitor - OxyByteBlood Oxygen Monitor - OxyByteFree3.9★ (7)YesYesAug 2026

Top Picks for Oxygen Level Monitor

Blood Oxygen Level: Analyzer#2

Blood Oxygen Level: Analyzer by Svetlana Rabosh

O2, pulse calculator: Tracker
Strong Contender
🏥 Medical
3.9(190 ratings)
FreeIn-App Purchases
Blood Oxygen Level: Analyzer screenshot 1
Blood Oxygen Level: Analyzer screenshot 2
Blood Oxygen Level: Analyzer screenshot 3
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Blood Oxygen Level: Analyzer screenshot 6

Track your blood oxygen saturation levels and monitor changes over time. Log additional symptoms to gain a more comprehensive understanding of your condition. Supports multiple user profiles and synchronizes with HealthKit for pulse and oxygen data.

More Oxygen Level Monitor apps to explore

FAQ about Oxygen Level Monitor

What are the best oxygen level monitor apps for iPhone?
Blood Oxygen | O2 Monitor app+ tops our oxygen level monitor apps ranking as of September 2026, with a 4.6-star average from 424 App Store ratings, and it's free to download.
Yes — 19 of the top oxygen level monitor apps we rank are free to download, including Blood Oxygen | O2 Monitor app+ and Blood Oxygen Level: Analyzer.
Blood Oxygen | O2 Monitor app+ has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 242+ oxygen level 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 log your daily blood oxygen saturation (SpO2) and pulse rate readings. It helps you monitor your normal oxygen level range and estimated heart rate, providing a diary for your health data and reminders to log readings.
Key features include a log diary for SpO2 and pulse rate, fast and accurate pulse measurement, multi-profile support for family members, synchronization with Apple Health, Apple Watch support, and daily reminders to log your data.