O₂ Buddy: Blood Oxygen
Description
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. • Private & secure – Data stays on your device, only using Apple’s secure HealthKit storage. Perfect for anyone tracking sleep, fitness, or overall wellness, BloodO₂ makes your oxygen readings more accessible than ever.
What's New
- You can now get low blood oxygen notification from the app.
Details
- Developer
- Minorbits LLC
- Main Category
- Health & Fitness
- Version
- 1.4
- Version Release
- 2026-06-09
- Initial Release
- 2025-08-29
- Size
- 6 MB
- Age Rating
- 4+
- Price
- USD 0.99
- Languages
- EN
- Bundle ID
- com.minorbits.BloodO2
- Version Rating
- ★ 4.52 (42)
- First Seen
- 2026-05-29
Metadata updated 2026-06-16
Rank History
Free · Max 90 days · Top 5 categories shown (Y-axis: rank, lower is better)
No rank history data
Free Rankings
No rankings
Paid Rankings
Competitive Benchmark — Health-Fitness Top 10
What it takes to beat this app — comparison with the category's top apps. The orange row is the current app.
| # | App | Price | Rating | Ratings | Langs | Last Update |
|---|---|---|---|---|---|---|
| 1 | Streaks | USD 5.99 | ★ 4.81 | 27,340 | 28 | 2026-06-02 |
| 2 | AutoSleep: Watch Sleep Tracker | USD 8.99 | ★ 4.71 | 61,294 | 14 | 2025-11-29 |
| 3 | HeartWatch: Heart Rate Monitor | USD 8.99 | ★ 4.68 | 13,600 | 13 | 2025-10-21 |
| 4 | White Noise | USD 0.99 | ★ 4.84 | 45,262 | 3 | 2026-06-13 |
| 5 | Schumann Resonance | USD 1.99 | ★ 4.32 | 173 | 1 | 2026-06-04 |
| 6 | WorkOutDoors | USD 8.99 | ★ 4.69 | 1,660 | 1 | 2026-06-16 |
| 7 | Couch to 5K® - Run training | USD 4.99 | ★ 4.62 | 4,694 | 1 | 2025-12-24 |
| 8 | HealthFit | USD 6.99 | ★ 4.63 | 886 | 5 | 2026-06-01 |
| 9 | Blood Type Diet® | USD 3.99 | ★ 4.18 | 194 | 1 | 2025-08-04 |
| 10 | Seconds Pro Interval Timer | USD 7.99 | ★ 4.76 | 11,823 | 10 | 2025-11-30 |
| 35 | O₂ Buddy: Blood Oxygen | USD 0.99 | ★ 4.52 | 42 | 1 | 2026-06-09 |
More by This Developer
User Reviews
This app is easy to use and beneficial for tracking your daily health. It is easy to set up and send notifications of the information to your phone. I like how everything flows and is easy to setup.
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.
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.
I really miss the old on‑watch graph view. The current list of readings is much less useful at a glance, and only showing yesterday’s average makes today’s data feel incomplete. The mini trend graph on the watch was what made O2 Buddy stand out—please consider bringing a simple graph view back for recent readings and today’s evolving average.
Waste of money
Very responsive. Nice work around not needing your iPhone
It works…kind of. I mean, my O2 readings show up on the watch, but not until I go to the phone and receive the notice about a new reading, so I might as well just use the phone.
No idea why it works during the daytime, but will not update late at night or after midnight, early morning even if I take a manual reading, I still need to consult my iPhone for the O2 number.
Soon I will post my opinions about this app to help and to contribute with anyone that wish meet it. For now it’s installed and showing only my O2 measurements from four days ago.
PRICELESS!! BRAVO!!!
Reviews are collected only for apps with detected changes (new entries or sharp risers).