Best O2 Sensor App

0+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated September 2026

From beginner-friendly picks to power-user tools, our O2 sensor app list covers 0+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.

Compare top O2 Sensor App (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesNov 2026
2Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoNov 2026
3Blood Oxygen App+Blood Oxygen App+Free4.1★ (474)YesYesOct 2026
4Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (430)NoYesNov 2026
5Blood Oxygen Level: AnalyzerBlood Oxygen Level: AnalyzerFree3.9★ (194)NoYesNov 2026
6Sensor GlobeSensor GlobeFree—NoNoAug 2026
7SensDesk MobileSensDesk MobileFree—NoNoMay 2026
8PreSens Wireless StudioPreSens Wireless StudioFree—NoNoAug 2026

Top Picks for O2 Sensor App

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
#26in 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 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
  • 🐛 Doesn't give accurate readings
  • 🐛 Doesn't sync with devices
Blood Oxygen App+#3

Blood Oxygen App+ by Kishan Panchotiya

Heart Rate Monitor Diary
Worth Considering
🏥 Medical
4.1😞(474 ratings)
FreeAdsIn-App Purchases
Blood Oxygen App+ screenshot 1
Blood Oxygen App+ screenshot 2
Blood Oxygen App+ screenshot 3

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.

What We Love

  • 💰 Flat one-time price without subscription fatigue
  • ✅ Does exactly what it promises for basic tracking
  • 📊 Simple and straightforward functionality

Room to Improve

  • 🚫 Core measurement functionality doesn't work
  • ❌ Requires manual data entry instead of actual measurement
  • 📱 Not compatible with Apple Watch despite claims
  • 🐛 Inaccurate heart rate readings (20-40 bpm off)
  • 📖 Lacks instructions or user guidance
  • ⏸️ Won't allow multiple readings per day
  • 🎬 Excessive ads that prevent app return
  • 🔐 Access/restoration issues for paid users
  • 😕 Misleading app description and functionality

More O2 Sensor App apps to explore

FAQ about O2 Sensor App

What is the best O2 sensor app for iPhone?
Blood Oxygen App tops our O2 sensor app ranking as of September 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Yes — 19 of the top O2 sensor app we rank are free to download, including Blood Oxygen App and Blood Oxygen Level.
Blood Oxygen App has no ads and offers in-app purchases, according to its App Store listing as of September 2026.