Best Spo2 Apps

245+ iOS apps curated and reviewed

3.9 avg rating
18 free apps
Updated October 2026

The best spo2 apps on iPhone average 3.9★ across 245+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.

Compare top Spo2 Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesNov 2026
2Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoNov 2026
3SPO2er: Blood Oxygen on WatchSPO2er: Blood Oxygen on Watch$0.994.9★ (10)NoNoOct 2026
4HR & SpO2 - Companion AppHR & SpO2 - Companion AppFree was $0.99—NoNoOct 2026
5Blood Oxygen Monitor: SpO2Blood Oxygen Monitor: SpO2Free—NoYesOct 2026
6View Tracker SpO2 & Pulse rateView Tracker SpO2 & Pulse rateFree2.5★ (2)NoYesOct 2026
7UltraLS   ECG SpO2 TEMPUltraLS ECG SpO2 TEMPFree3.0★ (1)NoNoMay 2026
8Blood Oxygen SpO₂ TrackerBlood Oxygen SpO₂ TrackerFree3.5★ (130)NoYesOct 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
#28in 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
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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
SPO2er: Blood Oxygen on Watch#3

SPO2er: Blood Oxygen on Watch by Kevin Edwards

SPO₂ Monitoring from HealthKit
Worth Considering
💪 Health & Fitness
4.9(10 ratings)
$0.99
SPO2er: Blood Oxygen on Watch screenshot 1
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Visualize your blood oxygen levels with clear graphs and historical data. This app syncs with HealthKit to display your latest readings, 24-hour trends, and past samples on your iPhone and Apple Watch. It prioritizes privacy with no accounts, ads, or data sharing.

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 October 2026, with a 4.6-star average from 31K App Store ratings, and it's free to download.
Yes — 18 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 October 2026.
We track 245+ spo2 apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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