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Best O2 Monitor Apps

249+ iOS apps curated and reviewed

4.4 avg rating
18 free apps
Updated August 2026

Every iPhone needs a few good o2 monitor apps. We benchmark 249+ 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 (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesAug 2026
2Heart Rate Monitor - Pulse BPMHeart Rate Monitor - Pulse BPMFree4.6★ (130K)YesYesAug 2026
3Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoAug 2026
4Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (423)NoYesAug 2026
5Oximeter - Track Oxygen SpO2Oximeter - Track Oxygen SpO2Free4.5★ (466)NoYesAug 2026
6Pulse Plus: Heart Rate MonitorPulse Plus: Heart Rate MonitorFree4.4★ (3.6K)YesYesAug 2026
7Blood Oxygen App- WatchBlood Oxygen App- WatchFree4.2★ (635)NoYesAug 2026
8OxyRemote: Oxygen MonitorOxyRemote: Oxygen MonitorFree5.0★ (1)NoYesAug 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 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
Heart Rate Monitor - Pulse BPM#2

Heart Rate Monitor - Pulse BPM by Zane

Pulse: Step,Health HR&Oximeter
Strong Contender
💪 Health & Fitness
4.6😐(130K ratings)
FreeAdsIn-App Purchases
Heart Rate Monitor - Pulse BPM screenshot 1
Heart Rate Monitor - Pulse BPM screenshot 2
Heart Rate Monitor - Pulse BPM screenshot 3
Heart Rate Monitor - Pulse BPM screenshot 4

Easily monitor your heart rate, track steps, and record vital health metrics like blood pressure and body temperature. Save and visualize your health data, set reminders, and share your progress with friends and family. This app provides convenient health insights for daily well-being.

What We Love

  • 👍 Accurate heart rate measurements
  • 📊 Helpful for tracking health conditions
  • 🗓️ Ability to save and review past readings
  • 💻 Easy to use interface

Room to Improve

  • 📺 Excessive advertisements that interfere with usage
  • 🔒 Subscription required for full functionality
  • 🔢 Limited number of free daily measurements
Blood Oxygen Level#3

Blood Oxygen Level by Enrique Villahermosa Juara

Record pulse and oxygen level
Worth Considering
🏥 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

More O2 Monitor apps to explore

4
Blood Oxygen | O2 Monitor app+
Blood Oxygen | O2 Monitor app+
Blood Oxygen | O2 Monitor app+
Saturation Level + Pulse Rate
Free

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.

Log oxygen saturation (SpO2) and pulse rateFast and accurate pulse measurementMulti-profile support for family members
🏥 Medical
(423)
freemium
5
Oximeter - Track Oxygen SpO2
Oximeter - Track Oxygen SpO2
Oximeter - Track Oxygen SpO2
Blood O2 Monitor Tracker
Free

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.

Display, record, and view SpO2 dataDetailed analytics with data spikesNutrition and meditation guides
💪 Health & Fitness
(466)
free with in-app purchases
6
Pulse Plus: Heart Rate Monitor
Pulse Plus: Heart Rate Monitor
Pulse Plus: Heart Rate Monitor
Blood Pressure・Oxygen Tracker
Free

Track your heart rate using your phone's camera with this easy-to-use app. It utilizes photoplethysmography to provide accurate pulse measurements and visualizes your data over time. Integrate with Apple Health and receive reminders to stay on top of your fitness goals.

Heart rate measurement via phone cameraPhotoplethysmography (PPG) technologyPersonalized measurement history dashboard
💪 Health & Fitness
(3.6K)
subscription
7
Blood Oxygen App- Watch
Blood Oxygen App- Watch
Blood Oxygen App- Watch
Log & track pulse o2 levels
Free

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.

Blood oxygen (SpO2) logging and trackingAutomatic low oxygen level notificationsHeart rate and HRV monitoring
🏥 Medical
(635)
free with in-app purchases
8
OxyRemote: Oxygen Monitor
OxyRemote: Oxygen Monitor
OxyRemote: Oxygen Monitor
Watch Loved Ones Remotely
Free

Monitor blood oxygen and heart rate remotely using a compatible Bluetooth pulse oximeter. Receive real-time updates and custom alerts for loved ones or personal wellness trends. Track history and share readings with family.

Remote monitoring of blood oxygen and heart rateCustomizable alert ranges and push notificationsShare live readings with up to 5 family members
💪 Health & Fitness
(1)
free with in-app purchases
9
Heart Rate, Oxygen Monitor Pro
Heart Rate, Oxygen Monitor Pro
Heart Rate, Oxygen Monitor Pro
No Subscription, No Ad's
$2.99
🏥 Medical
(0)
10
OPL Monitor
OPL Monitor
OPL Monitor
App for Car Diagnostic
Free

Monitor DPF particulate filter parameters for specific Opel/Vauxhall models using an ELM327 compatible adapter. View real-time data for various engine codes on your device.

DPF particulate filter monitoringELM327, iCar, vLinker compatibilityReal-time parameter reading
🔧 Utilities
(22)
free with in-app purchases
11
Heart Rate, Oxygen Monitor
Heart Rate, Oxygen Monitor
Heart Rate, Oxygen Monitor
No Subscription, No Ad's
$1.99

Monitor your heart rate and blood oxygen levels in real-time from your wrist. This app provides dual-screen insights into your cardiovascular well-being without collecting or sharing any personal data. A portion of the one-time purchase supports a UK charity.

Real-time heart rate monitoringBlood oxygen (SpO2) level monitoringDual-screen health insights
💪 Health & Fitness
(0)
paid
12
BabyBeam: Baby Monitor Camera
BabyBeam: Baby Monitor Camera
BabyBeam: Baby Monitor Camera
Video, cry alarm, talk back
Free
🔧 Utilities
(0)
13
Welltory: Stress & Heart Rate
Welltory: Stress & Heart Rate
Welltory: Stress & Heart Rate
HRV, Sleep, BP & O2 Monitor
Free

This app helps you understand your body's signals by analyzing heart rate variability and integrating data from over 1,000 devices and apps. It provides science-backed insights into sleep, stress, heart health, and activity to help you feel better and optimize your wellness.

Heart rate variability analysisSleep quality insightsStress monitoring
💪 Health & Fitness
(132K)
freemium
14
Heart Nest: Wellness Monitor
Heart Nest: Wellness Monitor
Heart Nest: Wellness Monitor
Blood Pressure & Heart Rate
Free

Track heart rate, blood pressure, and other wellness metrics for your family. Monitor trends and gain insights into daily health changes with easy-to-read dashboards and individual profiles.

Camera-based heart rate measurementBlood pressure and blood oxygen recordingIndividual family member profiles
🔧 Utilities
(13)
free with in-app purchases
15
VL Monitor
VL Monitor
VL Monitor
by ANIDRA TECH VENTURES PTY LTD
Free
🏥 Medical
(0)
16
BLE Monitor
BLE Monitor
BLE Monitor
by Patrick Mueller
Free
🔧 Utilities
(0)
17
HR & SpO2 - Companion App
HR & SpO2 - Companion App
HR & SpO2 - Companion App
Multi-Metrics Health Widget
Free
$0.99 | 100% OFF
💪 Health & Fitness
(0)
18
HeartBP Monitor
HeartBP Monitor
HeartBP Monitor
Track BP, HR, Glucose & SpO2
Free
💪 Health & Fitness
(0)
19
Oxygen Planner
Oxygen Planner
Oxygen Planner
Calculate Total Oxygen Demand
Free

This application helps medical professionals and supply chain managers calculate total oxygen demand for various medical devices. It supports different oxygen sources like cylinders, liquid oxygen, and concentrators, aiding in efficient supply management for hospitals and individual users.

Calculate total oxygen demandSupports various oxygen sourcesWide range of delivery devices
💼 Business
(2)
free
20
Heart Monitor: Track & Care
Heart Monitor: Track & Care
Heart Monitor: Track & Care
Monitor heart rate, BP & more
Free

This app helps you monitor vital health indicators like heart rate, blood pressure, and blood glucose. It offers quick data capture via camera, comprehensive health records, and AI-powered insights for better self-care.

Heart Rate & HRV MeasurementQuick Data Capture via CameraComprehensive Health Records
🔧 Utilities
(3)
free with in-app purchases

FAQ about O2 Monitor

What are the best o2 monitor apps for iPhone?
Blood Oxygen App tops our o2 monitor apps ranking as of August 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Yes — 18 of the top o2 monitor apps we rank are free to download, including Blood Oxygen App and Heart Rate Monitor - Pulse BPM.
Blood Oxygen App has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 249+ o2 monitor apps on the iOS App Store as of August 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.

Related searches

blood oxygen | o2 monitor app+o2 monitor free