52
BU Score
Solid
SPO2er: Blood Oxygen on Watch
✍️ bumetric analysis
“
SPO2er: Blood Oxygen on Watch is an iOS app from Kevin Edwards in the Health & Fitness category, currently rated 4.8★ across 6 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Our BU Score puts it at 52: Solid (established niche player). For a Health & Fitness app, that means established niche player.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.99)METRIC | +$2,800 | |
| Excellent rating (4.8★)METRIC | +$2,200 | |
| New app (5 months old)METRIC | −$700 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (6 ratings)METRIC | −$300 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Dec 25
Feb 26
Mar 26
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 7 MB🔞 4+📱 iOS 26.0+🔖 v1.2🔄 updated 4mo ago🌐 EN📂 Health & Fitness💰 Paid🚀 Launched 2025 (0y old)
📝 About this app
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.
🆕 What's New · v1.2
• Color picker for highlighted low threshold values.
• Low threshold line in graphs.
• Icons display properly in all iOS 26 modes (Default, Dark, Clear and Tinted).
• Optimizations of data pipeline (faster updating and more battery efficient).
• Detailed connectivity info (at bottom of watch app).
• Better coordination with multiple watch use.
• Low threshold line in graphs.
• Icons display properly in all iOS 26 modes (Default, Dark, Clear and Tinted).
• Optimizations of data pipeline (faster updating and more battery efficient).
• Detailed connectivity info (at bottom of watch app).
• Better coordination with multiple watch use.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- SPO2er: Blood Oxygen on Watch
- Developer
- Kevin Edwards
- Bundle ID
- com.xcitationsoftware.SPO2er
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN
Company
- Website
- xcitationsoftware.com
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $201/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
⭐Recent App Store Reviews2 latest · avg 5.0★ · 100.0% 5★ · 0% 1★
5★2 (100%)
4★0 (0%)
3★0 (0%)
2★0 (0%)
1★0 (0%)
+1 ratings/week
Praise: perfect ×1
Top positive
★★★★★ Apple Watch 10 Complication
The app works perfectly and have the Apple Watch complication back on a series 10!…
★★★★★ Better than Vitals
I upgraded my watch to a new one that doesn’t show Blood Oxygen on the watch. Now I can! Even better I get history view and see low values. Well done.…
Top negative
★★★★★ Apple Watch 10 Complication
The app works perfectly and have the Apple Watch complication back on a series 10!…
★★★★★ Better than Vitals
I upgraded my watch to a new one that doesn’t show Blood Oxygen on the watch. Now I can! Even better I get history view and see low values. Well done.…
📈Ratings growth6 ratings+500% lifetimeShow 3-year history estimate ▾
Tracked (4 weeks) Pre-tracking estimate (6 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
Full revenue analysis
Read the article-style breakdown for SPO2er: Blood Oxygen on Watch: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.