O₂ Buddy: Blood Oxygen
63
Quality Score
Solid
O₂ Buddy: Blood Oxygen
Low confidence
✍️ bumetric analysis
“
O₂ Buddy: Blood Oxygen is an iOS app from Minorbits LLC in the Health & Fitness category, currently rated 4.5★ across 42 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 63: Solid (established niche player). For a Health & Fitness app, that means established niche player. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
💰 Monthly revenue · now vs forecast
● Right now
$2.3K
per month
→
12-mo forecast
$2.0K – $7.3K
per month
→
24-mo forecast
$1.9K – $16.9K
per month
INDIE tier
💡 Grow this revenue
Free AI audit of this app’s store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$70K
↳ What it cost to build · not monthly revenue
Likely range $50K – $95K
$25K · MVP floor$100K · indie scale$500K+ · studio build
📈Pays back in ~4 months at current MRR
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱MVP baseline (design + 1-store ship) | +$28K |
| 📱5 unique screens × $4.5K | +$22K |
| ⚙Health & Fitness complexity ×1.40 | +$20K |
Total estimate$70K
ONE-TIME · EXIT VALUE💵 Estimated acquisition value
$275K
↳ What it would sell for · not monthly revenue
Marketplace range $225K – $375K · 16× MRR multiple
💸~3.9× return on build cost
Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
How the multiple was built
| 📺Ad-supported base | 15× MRR |
| ⭐★ rating ≥ 4.4 (solid) | +8% |
| 🏷Health & Fitness category multiple | +10% |
| ⭐Small user base (<1K ratings) | -8% |
Final multiple16× MRR
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$2.3K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition, low defensibility moat
6 months
$2.0K – $4.6K
12 months
$2.0K – $7.3K
24 months
$1.9K – $16.9K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Early-stage solo · 40/100INDIE TIERexpected for tierRevenue Strength
3.4
Product Quality
3.6
Market Position
2.0
Growth Velocity
5.0
Defensibility
2.2
Operational Safety
10.0
Founder Strength
5.2
Monetization Maturity
1.0
- 💰 Revenue: Modest — $926 - $5792/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.52★ across 42 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $41K-$74K. Portfolio play ($17K/mo combined) commands premium.
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
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 7 of 7 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| Excellent rating (4.5★)METRIC | +$2,200 | |
| excellent appREVIEW | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| New app (8 months old)METRIC | −$700 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (42 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.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
App Specs
🔐 Own this app? Claim & verify MRR →💾 5 MB🔞 4+📱 iOS 18.0+🔖 v1.3🔄 updated 0d ago🌐 EN📂 Health & Fitness💰 Paid
📝 About this app
Stay on top of your health with BloodO₂ — the fastest, most seamless way to view your blood oxygen readings.
• Clear charts, instant data – See your latest 25 readings in real time, stored and synced instantly from HealthKit.
• Always up to date – As soon as a new SpO₂ sample is recorded, it syncs to your Apple Watch for immediate viewing.
• Daily averages – Compare Today vs Yesterday at a glance to better understand your wellness trends.
• Designed for Apple Watch – Lightweight, fast, and glanceable.… View full description on the official store →
• Clear charts, instant data – See your latest 25 readings in real time, stored and synced instantly from HealthKit.
• Always up to date – As soon as a new SpO₂ sample is recorded, it syncs to your Apple Watch for immediate viewing.
• Daily averages – Compare Today vs Yesterday at a glance to better understand your wellness trends.
• Designed for Apple Watch – Lightweight, fast, and glanceable.… View full description on the official store →
🆕 What's New · v1.3
- Added widget support
- Added setting for 12/24 hour clock
- Improved sync
- Fixed UI bug if reading is lower than chart
- Added setting for 12/24 hour clock
- Improved sync
- Fixed UI bug if reading is lower than chart
📅
What Worked™ · Development Pipeline
5 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-03
⭐
Rating ↓ 4.50 → 3.94 (dropped 0.56★)
2026-03
⭐
Rating ↑ 4.07 → 4.50 (improved 0.43★)
2025-11
📈
Crossed 10 ratings — social-proof flywheel kicking in
2025-09
⭐
Rating ↓ 5.00 → 4.43 (dropped 0.57★)
2025-09
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 4.52381★ | 42 | 4.52381★ this version |
| 🇬🇧 GB | 0★ | 0 | — |
| 🇩🇪 DE | 0★ | 0 | — |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇨🇦 CA | 1★ | 1 | 1★ this version |
| 🇦🇺 AU | 0★ | 0 | — |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- O₂ Buddy: Blood Oxygen
- Developer
- Minorbits LLC
- Bundle ID
- com.minorbits.BloodO2
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- 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
- $17.4K/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
⭐Recent App Store Reviews18 latest · avg 3.83★ · 55.6% 5★ · 16.7% 1★
5★10 (56%)
4★2 (11%)
3★2 (11%)
2★1 (6%)
1★3 (17%)
+4 ratings/week
Praise: great ×4 awesome ×2 excellent ×1 perfect ×1 recommend ×1
Top positive
★★★★★ Thank you
Just helped someone setup their first Apple Watch. They are 79. You made my day. I don’t own a watch, I bought the app to show my appreciation.…
★★★★★ Works great!!
Very responsive. Nice work around not needing your iPhone…
Top negative
★☆☆☆☆ Doesn’t list which watches it works with.
I have a SE2 and an iPhone13. The app says it works with the iPhone, but does not say that it doesn’t work with the SE2 watch.…
★☆☆☆☆ Waste
Waste of money…
📈Ratings growth42 ratings+4100% lifetimeShow 3-year history estimate ▾
Tracked (17 weeks) Pre-tracking estimate (8 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.
📝 Description
95
BU Score · Transcendent
About this analysis
Why low confidence: only 42 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does O₂ Buddy make per month?▴
Based on our ML-calibrated revenue forecast, O₂ Buddy earns approximately $17K/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
What apps are like O₂ Buddy?▴
Browse the full Health & Fitness category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
Who makes O₂ Buddy?▴
O₂ Buddy is published by Minorbits LLC on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is O₂ Buddy's BU Score?▴
O₂ Buddy has a BU Score of 63/100 (Solid). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.