Best Spo2 Apps

243+ iOS apps curated and reviewed

4.0 avg rating
17 free apps
Updated September 2026

The best spo2 apps on iPhone average 4.0★ across 243+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.

Compare top Spo2 Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesSep 2026
2Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoSep 2026
3View Tracker SpO2 & Pulse rateView Tracker SpO2 & Pulse rateFree1.0★ (1)NoYesMay 2026
4Oximeter - Track Oxygen SpO2Oximeter - Track Oxygen SpO2Free4.5★ (547)NoYesSep 2026
5HR & SpO2 - Companion AppHR & SpO2 - Companion App$0.99NoNoSep 2026
6SPO2er: Blood Oxygen on WatchSPO2er: Blood Oxygen on Watch$0.994.8★ (6)NoNoAug 2026
7UltraLS   ECG SpO2 TEMPUltraLS ECG SpO2 TEMPFree3.0★ (1)NoNoMay 2026
8Blood Oxygen SpO₂ TrackerBlood Oxygen SpO₂ TrackerFree was $1.993.4★ (128)NoYesSep 2026

Top Picks for Spo2

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
#25in 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
  • ❌ 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

More Spo2 apps to explore

FAQ about Spo2

What are the best spo2 apps for iPhone?
Blood Oxygen App tops our spo2 apps ranking as of September 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Yes — 17 of the top spo2 apps 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.
We track 243+ spo2 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 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.

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