Best Spo2 Watcher Apps

249+ iOS apps curated and reviewed

4.0 avg rating
17 free apps
Updated September 2026

If you already know SpO2 Watcher, this is the deeper bench. 249+ spo2 watcher apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Spo2 Watcher Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1SpO2 WatcherSpO2 Watcher$0.99NoNoAug 2026
2Oximeter - Track Oxygen SpO2Oximeter - Track Oxygen SpO2Free4.5★ (547)NoYesSep 2026
3O2 Buddy: Blood Oxygen SpO2O2 Buddy: Blood Oxygen SpO2$0.994.6★ (46)NoYesSep 2026
4Blood Oxygen | O2 Monitor app+Blood Oxygen | O2 Monitor app+Free4.6★ (424)NoYesSep 2026
5HR & SpO2 - Widget UnionHR & SpO2 - Widget UnionFree was $0.99NoNoSep 2026
6Blood Oxygen Tracker – SpO2Blood Oxygen Tracker – SpO2FreeNoYesSep 2026
7PulseOxiWatch for Apple WatchPulseOxiWatch for Apple WatchFree2.3★ (7)YesNoAug 2026
8Blood Oxygen SpO₂ TrackerBlood Oxygen SpO₂ TrackerFree was $1.993.4★ (128)NoYesSep 2026

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FAQ about Spo2 Watcher

Are there free spo2 watcher apps for iPhone?
Yes — 17 of the top spo2 watcher apps we rank are free to download, including Oximeter - Track Oxygen SpO2 and Blood Oxygen | O2 Monitor app+.
SpO2 Watcher has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 249+ spo2 watcher apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
SpO2 Watcher is available for a one-time purchase of $0.99. This grants you full access to all its features for restoring blood oxygen insights on your Apple Watch.
SpO2 Watcher is designed to work with both iPhone and Apple Watch devices. It leverages HealthKit data stored on your iPhone to display information on your watch.