Best Free Blood Oxygen App Reader

248+ iOS apps curated and reviewed

4.1 avg rating
19 free apps
Updated September 2026

Whether you're new to free blood oxygen app reader or looking for an upgrade, our curated collection of 248+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Free Blood Oxygen App Reader (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Amazon Kindle: Reading AppAmazon Kindle: Reading AppFree4.9★ (5.8M)NoNoSep 2026
2Blood Oxygen AppBlood Oxygen AppFree4.6★ (31K)NoYesSep 2026
3Blood Oxygen LevelBlood Oxygen LevelFree4.3★ (2K)YesNoSep 2026
4Blood Oxygen App+Blood Oxygen App+Free4.1★ (474)YesYesAug 2026
5O2 Buddy: Blood Oxygen SpO2O2 Buddy: Blood Oxygen SpO2$0.994.6★ (46)NoYesSep 2026
6Temperature + Blood Oxygen appTemperature + Blood Oxygen appFree3.7★ (72)NoYesAug 2026
7Free Blood Pressure Monitor™Free Blood Pressure Monitor™Free5.0★ (11)YesNoSep 2026
8Apple BooksApple BooksFree4.4★ (89K)NoNoSep 2026

Top Picks for Free Blood Oxygen App Reader

Amazon Kindle: Reading App#1

Amazon Kindle: Reading App by AMZN Mobile LLC

Read books. Millions of ebooks
Editor's Choice
📚 Books
4.9😊(5.8M ratings)
FreeIn-App Purchases
#4in Books
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Amazon Kindle: Reading App screenshot 6

Access a vast library of eBooks, magazines, and comics on your mobile device. Customize your reading experience with adjustable text, brightness, and page-turning options. Look up words, track progress, and sync across devices.

What We Love

  • 📚 Huge library of books
  • 📱 Portable and convenient
  • 🔍 Useful features like dictionary lookup and highlighting
  • 🌙 Adjustable reading settings (font, brightness, etc.)
  • 🔁 Seamless syncing across devices
  • 💰 Affordable books and Kindle Unlimited subscription

Room to Improve

  • 🛒 Cannot purchase books directly in the app
  • 🗂️ Difficulty organizing and managing large book libraries
  • 🔍 Inconsistent behavior when highlighting/taking notes
  • 🔄 Unreliable syncing between devices
  • 🔌 Drains device battery quickly
Blood Oxygen App#2

Blood Oxygen App by AboutMe Apps, Inc.

SpO2 Level Monitor・Heart Rate
Strong Contender
🏥 Medical
4.6😞(31K ratings)
FreeIn-App Purchases
#26in Medical
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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#3

Blood Oxygen Level by Enrique Villahermosa Juara

Record pulse and oxygen level
Worth Considering
🏥 Medical
4.3😞(2K ratings)
FreeAds
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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 Free Blood Oxygen App Reader apps to explore

FAQ about Free Blood Oxygen App Reader

What is the best free blood oxygen app reader for iPhone?
Amazon Kindle: Reading App tops our free blood oxygen app reader ranking as of September 2026, with a 4.9-star average from 5.8M App Store ratings, and it's free to download.
Amazon Kindle: Reading App has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 248+ free blood oxygen app reader on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
You can read eBooks, magazines, and comics that you have purchased on Amazon. The app also provides access to titles included with Kindle Unlimited and Amazon Prime memberships.
You can customize text size, font type, margins, text alignment, and orientation. You can also adjust brightness and background colors for comfortable reading day or night.