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Best O2 Monitor Free Apps & Games

233+ iOS apps & games curated and reviewed

4.4 avg rating
20 free apps & games
Updated July 2026

With an average user rating of 4.4★, the o2 monitor free category is one of the App Store's strongest. Browse all 233+ apps and games we track, sorted so the most loved ones surface first.

Compare top O2 Monitor Free Apps & Games (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesAug 2026
2Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoAug 2026
3Heart Rate Monitor - Pulse BPMHeart Rate Monitor - Pulse BPMFree4.6★ (130K)YesYesAug 2026
4Oximeter - Track Oxygen SpO2Oximeter - Track Oxygen SpO2Free4.5★ (466)NoYesAug 2026
5Instant Heart Rate: HR MonitorInstant Heart Rate: HR MonitorFree4.9★ (229K)YesYesAug 2026
6InPulse - Heart Rate MonitorInPulse - Heart Rate MonitorFree4.6★ (177K)NoYesAug 2026
7Heart Analyzer: Pulse TrackerHeart Analyzer: Pulse TrackerFree4.7★ (22K)NoYesAug 2026
8Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (424)NoYesAug 2026

Top Picks for O2 Monitor Free

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
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
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
Heart Rate Monitor - Pulse BPM#3

Heart Rate Monitor - Pulse BPM by Zane

Pulse: Step,Health HR&Oximeter
Worth Considering
💪 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

More O2 Monitor Free apps to explore

4
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
5
Instant Heart Rate: HR Monitor
Instant Heart Rate: HR Monitor
Instant Heart Rate: HR Monitor
Pulse Tracker & Stress Test
Free

Measure your heart rate and stress levels accurately using your phone's camera. Track trends, view pulse waveforms, and utilize a StandUp test for fitness insights. Integrates with Apple Health.

Heart rate measurementStress level checkPulse waveform graphs
💪 Health & Fitness
(229K)
free with in-app purchases
6
InPulse - Heart Rate Monitor
InPulse - Heart Rate Monitor
InPulse - Heart Rate Monitor
Log Blood Pressure & Oxygen
Free

Monitor your heart rate using your iPhone's camera and log blood pressure and oxygen saturation. Receive daily wellness assessments, habit tracking, and emotional wellbeing tools. This app is for fitness and general wellness information.

Measure heart rate with cameraLog blood pressure and oxygenDaily wellness assessments
💪 Health & Fitness
(177K)
freemium
7
Heart Analyzer: Pulse Tracker
Heart Analyzer: Pulse Tracker
Heart Analyzer: Pulse Tracker
Watch Health & Cardio Metrics
Free

Gain deep insights into your heart health using data from your Apple Watch. Visualize trends, analyze metrics like Cardio Recovery and Heart Rate Zones, and generate detailed PDF reports. Offers advanced features and privacy-focused data handling.

Dashboard with daily summariesVisualized heart rate and health data chartsHealth vital trend assessment
💪 Health & Fitness
(22K)
free with in-app purchases
8
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
(424)
freemium
9
Кислород в крови: Здоровье
Кислород в крови: Здоровье
Кислород в крови: Здоровье
Сатурация и уровень кислорода
Free

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.

Oxygen saturation trackingSymptom loggingHistory of changes
🏥 Medical
(190)
subscription
10
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
11
Blood Pressure Tracker SmartBP
Blood Pressure Tracker SmartBP
Blood Pressure Tracker SmartBP
Smart BP Heart Monitor Log App
Free

Log, monitor, and analyze blood pressure and heart measurements. Automatically calculate BMI, pulse pressure, and mean arterial pressure. Share reports with healthcare providers and track progress with clear graphs and statistics.

Log blood pressure, pulse, and weightAutomatic BMI, PP, and MAP calculationSync with Bluetooth BP monitors
🏥 Medical
(59K)
free with in-app purchases
12
Welltory: Health, Heart Rate
Welltory: Health, Heart Rate
Welltory: Health, Heart Rate
Stress, 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
(131K)
freemium
13
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
(631)
free with in-app purchases
14
Ping Pong - Watch Retro Game
Ping Pong - Watch Retro Game
Ping Pong - Watch Retro Game
classic retro game
Free

Relive classic arcade experiences with this retro game collection. Featuring multiple game modes, including ping pong, break out, and tetris, it offers intuitive controls and unlockable levels. Enjoy local multiplayer and track your progress on leaderboards.

13 classic game modesDigital Crown controlUnlockable levels and difficulty
🎮 Games
(4.8K)
free with in-app purchases
15
Blood Oxygen App+
Blood Oxygen App+
Blood Oxygen App+
Heart Rate Monitor Diary
Free

Easily track and monitor your blood oxygen levels and heart rate with a modern, user-friendly interface. Log your measurements, access recent data, and export your records for personal tracking.

Track blood oxygen levelMonitor heart rateLog measurements
🏥 Medical
(471)
free with in-app purchases
16
Annie Baby Monitor: Nanny Cam
Annie Baby Monitor: Nanny Cam
Annie Baby Monitor: Nanny Cam
Baby Video Camera - WiFi Cloud
Free

Transform your devices into a powerful baby monitor with live HD video and audio. Receive real-time alerts for sound and motion, and soothe your baby with two-way talk and lullabies. Track sleep patterns and log daily routines for comprehensive care.

HD video and audio monitoringCry and motion detection alertsUnlimited range via Wi-Fi/mobile data
🌟 Lifestyle
(2.5K)
free with in-app purchases
17
Temperature + Blood Oxygen app
Temperature + Blood Oxygen app
Temperature + Blood Oxygen app
Thermometer & saturation level
Free

Monitor your body temperature and blood oxygen saturation levels. Visualize your health trends over time with this simple tracking tool. Gain insights into your well-being.

Track body temperatureMonitor blood oxygen levelsView health trends
🏥 Medical
(72)
free with in-app purchases
18
Baby Monitor Nancy: Cloud Cam
Baby Monitor Nancy: Cloud Cam
Baby Monitor Nancy: Cloud Cam
Nanny Video Babysitting Camera
Free

Transform two iOS devices into a secure audio and video baby monitor. Keep an eye and ear on your little one from anywhere, with features like night mode and two-way talk. Receive instant notifications for sounds and disconnections.

Live stream video2-way audioUnlimited reach
🌟 Lifestyle
(521)
free with in-app purchases
19
True Pulse Heart Rate Monitor
True Pulse Heart Rate Monitor
True Pulse Heart Rate Monitor
#1 Blood Pressure & O2 Logger
Free

Instantly measure your heart rate using your phone's camera. Track your health, view pulse waveforms, and access mental health tests. Premium offers unlimited features and supports a family business.

Instant heart rate monitoringPulse waveform graphsMental health tests
💪 Health & Fitness
(2.2K)
freemium
20
Heart Rate Monitor: Pulse
Heart Rate Monitor: Pulse
Heart Rate Monitor: Pulse
Blood Pressure & ECG Watch, O2
Free

Track your heart rate and blood pressure using your iPhone camera. Log your health data, view pulse waveforms, and calculate BMI. Access heart-healthy recipes and relaxing music.

Heart rate measurement via iPhone cameraApple Watch synchronizationBlood pressure and oxygen saturation logging
💪 Health & Fitness
(6.9K)
free with in-app purchases

FAQ about O2 Monitor Free

What are the best o2 monitor free apps & games for iPhone?
Blood Oxygen App tops our o2 monitor free apps & games ranking as of July 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 July 2026.
We track 233+ o2 monitor free apps & games on the iOS App Store as of July 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.