SPO2er Downloads & RevenueSPO2er: Blood Oxygen on Watch · App Store
SPO2er: Blood Oxygen on Watch is #54 in Health & Fitness Paid in United States and charting in 2 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperKevin Edwards
CategoryHealth & Fitness
Price0.99 USD
Released
Rating★ 4.9 (10)
Version1.2
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)500+ worldwide
SPO2er: Blood Oxygen on Watch update history & changes
Last change · 27 events since 1 Dec 2025Full timeline ↓📈Entered the top 100📈Charting in a new country🆕First spotted by AppInsider📦Version 1.2🆕Released on the App Store
Full timeline · 27 events
- 📈SPO2er: Blood Oxygen on Watch entered the top 100Top Paid · Health & Fitness · IT
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryItaly
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryTaiwan
- 📈SPO2er: Blood Oxygen on Watch entered the top 100Top Paid · Health & Fitness · TW
- 📈SPO2er: Blood Oxygen on Watch entered the top 100Top Paid · Health & Fitness · TR
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryTurkey
- 📈SPO2er: Blood Oxygen on Watch entered the top 100Top Paid · Health & Fitness · CA
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryCanada
- 📈SPO2er: Blood Oxygen on Watch entered the top 10Top Paid · Health & Fitness · ID
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryIndonesia
- 📈SPO2er: Blood Oxygen on Watch entered the top 10Top Paid · Health & Fitness · MY
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryMalaysia
- 📈SPO2er: Blood Oxygen on Watch entered the top 10 in 2 chartsTop Paid · Health & Fitness · ES · Top Paid · Health & Fitness · ZA
- 📈SPO2er: Blood Oxygen on Watch entered the top 100Top Paid · Health & Fitness · CO
- 📈SPO2er: Blood Oxygen on Watch charting in a new country in 2 chartsColombia · South Africa
- 📈SPO2er: Blood Oxygen on Watch entered the top 100Top Paid · Health & Fitness · GB
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryUnited Kingdom
- 📈SPO2er: Blood Oxygen on Watch entered the top 10 in 2 chartsTop Paid · Health & Fitness · MX · Top Paid · Health & Fitness · RU
- 📈SPO2er: Blood Oxygen on Watch entered the top 100Top Paid · Health & Fitness · ES
- 📈SPO2er: Blood Oxygen on Watch charting in a new country in 3 chartsSpain · Mexico · Russia
- 📈SPO2er: Blood Oxygen on Watch entered the top 10Top Paid · Health & Fitness · IN
- 📈SPO2er: Blood Oxygen on Watch charting in a new countryIndia
- 📈SPO2er: Blood Oxygen on Watch entered the top 100 in 2 chartsTop Paid · Health & Fitness · AU · Top Paid · Health & Fitness · DE
- 📈SPO2er: Blood Oxygen on Watch charting in a new country in 2 chartsAustralia · Germany
- 🆕SPO2er: Blood Oxygen on Watch first spotted by AppInsider#50 in Top Paid · Health & Fitness · United States
- 📦SPO2er: Blood Oxygen on Watch version 1.2No release notes
- 🆕SPO2er: Blood Oxygen on Watch released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.9 ★
10 ratings
Measured
Best rank now
#54
Health & Fitness PaidMeasured
SPO2er: Blood Oxygen on Watch at a glance
AI summary written from our chart and store data, 2026-10-15. It can be wrong: check the numbers above.
A privacy-focused utility that visualizes existing HealthKit blood oxygen data on iPhone and Apple Watch for users seeking trend analysis without external servers or accounts. The app has achieved strong traction in the Malaysian paid health category at #2, with moderate visibility in Spain (#22), the UK (#49), and the US (#60).
Similar apps: HealthWatch, Streaks, AutoSleep
SPO2er: Blood Oxygen on Watch on the App Store
App details
App ID
6755498703
Publisher
Kevin Edwards
On the store since
Dec 2025
Under a year
Minimum OS
iOS 26.0+
iPhone 11 and later
Devices
iPhone · iPad · Watch
Content rating
4+
Languages
1
EN
Size
7 MB
Also listed in
Lifestyle
SPO2er: Blood Oxygen on Watch downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where SPO2er: Blood Oxygen on Watch's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | Health & FitnessPaid | #54 |
 Taiwan | Health & FitnessPaid | #190 |
Apps near SPO2er: Blood Oxygen on Watch on the chart
Health & Fitness Paid, around #54.
Ratings
App Store, worldwide.
Rating
4.9 ★
10 ratings
Measured
Ratings
10
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.9★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
45/100
faster than 41% of Health & Fitness apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about SPO2er: Blood Oxygen on Watch
From recent reviews.
About SPO2er: Blood Oxygen on Watch
SPO2er gives you a clear, easy-to-understand view of your blood oxygen levels throughout the day. Using data already stored in the Health app, SPO2er displays your latest reading, 24-hour trends, high/low values, averages, and a complete history, both on your iPhone and Apple Watch.
There are no accounts, no ads, no servers, and no external data sharing. All information comes directly from HealthKit and stays securely on your device.
Features:
• Latest Blood Oxygen Reading
See your most recent SPO₂ measurement, formatted clearly with the exact time it was taken.
• 24-Hour Trend Graph
View an elegant sparkline showing how your SPO₂ changed over the past day, with high, low, and average values.
• Detailed History
Scroll through a timestamped list of SPO₂ samples from the last 24 hours.
• Apple Watch Complications
Choose from multiple complications that update automatically when new readings are available, so your most recent value is always just a glance away.
• Red Highlighting of User-Set Low Values
Set the lower threshold you want for highlighting SPO₂ values viewed on the Watch, Complication or SPO2er app on the iPhone.
• iPhone ↔ Watch Sync
Your iPhone reads SPO₂ data from the Health app and delivers it directly to the watch app and complications.
• No Sensors Accessed
SPO2er does not measure blood oxygen.
Instead, it reads the data you already have in the Health app, whether from Apple Watch, compatible third-party monitors, or other HealthKit-enabled devices.
Why SPO₂ Tracking Matters
Many wellness devices record blood oxygen throughout the day and night. SPO2er helps you keep an eye on overall trends, see how values vary, and stay more aware of changes, all using the health data you already collect.
Privacy-First Design
Your health information stays entirely on your device.
SPO2er does not collect, transmit, or store data on any server.
Permissions are used solely to read blood oxygen values from the Health app.
For Anyone Who Uses HealthKit
SPO2er works with:
• Apple Watch models that support blood oxygen
• Third-party SPO₂ monitors that write to HealthKit
• Wellness devices and apps that sync SPO₂ into the Health app
• Manually entered SPO₂ data in the Health app
If it’s in HealthKit, SPO2er can display it beautifully.
There are no accounts, no ads, no servers, and no external data sharing. All information comes directly from HealthKit and stays securely on your device.
Features:
• Latest Blood Oxygen Reading
See your most recent SPO₂ measurement, formatted clearly with the exact time it was taken.
• 24-Hour Trend Graph
View an elegant sparkline showing how your SPO₂ changed over the past day, with high, low, and average values.
• Detailed History
Scroll through a timestamped list of SPO₂ samples from the last 24 hours.
• Apple Watch Complications
Choose from multiple complications that update automatically when new readings are available, so your most recent value is always just a glance away.
• Red Highlighting of User-Set Low Values
Set the lower threshold you want for highlighting SPO₂ values viewed on the Watch, Complication or SPO2er app on the iPhone.
• iPhone ↔ Watch Sync
Your iPhone reads SPO₂ data from the Health app and delivers it directly to the watch app and complications.
• No Sensors Accessed
SPO2er does not measure blood oxygen.
Instead, it reads the data you already have in the Health app, whether from Apple Watch, compatible third-party monitors, or other HealthKit-enabled devices.
Why SPO₂ Tracking Matters
Many wellness devices record blood oxygen throughout the day and night. SPO2er helps you keep an eye on overall trends, see how values vary, and stay more aware of changes, all using the health data you already collect.
Privacy-First Design
Your health information stays entirely on your device.
SPO2er does not collect, transmit, or store data on any server.
Permissions are used solely to read blood oxygen values from the Health app.
For Anyone Who Uses HealthKit
SPO2er works with:
• Apple Watch models that support blood oxygen
• Third-party SPO₂ monitors that write to HealthKit
• Wellness devices and apps that sync SPO₂ into the Health app
• Manually entered SPO₂ data in the Health app
If it’s in HealthKit, SPO2er can display it beautifully.
Latest updates
1.2
