# Oxi tracker vs Blood Oxygen App

The clearest difference is rating: Blood Oxygen App at 4.6 against Oxi tracker's 2.2. Blood Oxygen App also leads on update cadence (every 2 weeks vs every 6 months) and ratings volume (31K vs 62). Oxi tracker's advantage is in-app purchases (none vs 14) and iOS requirement (8.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Blood Oxygen App sells 10 in-app purchases, starting at $2.99 per 7 days. Oxi tracker asks for nothing beyond the download.

Blood Oxygen App holds the better App Store score, 4.6 against 2.2. That said, the two scores are not equally well evidenced: Blood Oxygen App has 31K ratings behind it against 62, so its average is the more settled of the two. Written reviews point the same way: 13% of Oxi tracker's written reviews are positive against 26% of Blood Oxygen App's.

Oxi tracker ships an update every 6 months, Blood Oxygen App every 2 weeks. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Oxi tracker | Blood Oxygen App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (62 ratings)](https://appshunter.io/ios/app/oxi-tracker/id1064769834/reviews) | **[4.6 (31K ratings)](https://appshunter.io/ios/app/blood-oxygen-app/id1541992656/reviews)** |
| Number of ratings | 62 | **31K** |
| Positive reviews | 12.5% of reviews | **25.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Best chart rank | — | **#27** |
| Size | 28 MB | 317 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 17+ | 12+ |
| Developer | [Guangdong Biolight Meditech Co., Ltd.](https://appshunter.io/developer/888975473) | [AboutMe Apps, Inc.](https://appshunter.io/developer/1088980079) |

## What reviewers say

### Oxi tracker

[App page](https://appshunter.io/ios/app/oxi-tracker/id1064769834)

Monitor blood oxygen levels, pulse rate, and perfusion index in real-time. View waveform and trend charts, ideal for daily health maintenance and sleep analysis.

**Highlights:** Real-time blood oxygen waveform, SpO2, PR, PI monitoring, Trend charts, Bluetooth connectivity, Sleep state analysis

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Device works standalone
- 👍 Basic data recording

**What reviewers complain about**

- 🐛 App doesn't connect
- 🐛 Registration fails
- 🐛 No account creation
- 🐛 Bluetooth issues
- 🐛 Outdated software

**Reported bugs**

- App no longer allows recording
- Device doesn't connect with iPhone
- Cannot register account
- App does not connect to device
- Error code when trying to register

**Requested features**

- Export data for analysis
- Integrate with Apple HealthKit
- Background data logging
- Keep pleth reading
- Alarm setting on app


### Blood Oxygen App

[App page](https://appshunter.io/ios/app/blood-oxygen-app/id1541992656)

**Currently charting:** #27 Top Grossing · Medical (US App Store)

Monitor blood oxygen levels and heart rate using your phone's camera or by syncing with your Apple Watch. Track vital signs, share data with your doctor, and access curated health articles. Includes breathing exercises and sleep reports.

**Highlights:** Blood oxygen monitoring, Heart rate estimation via camera, Apple Watch sync, Data logging and export (PDF), Box breathing exercises, Sleep reports

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium features set | $2.99 | per 7 days |
| Pulse oximeter for Apple Watch | $9.99 | per month |
| Premium month | $9.99 | per month |
| Premium month | $12.99 | per month |
| Premium features (all) | $19.99 | per year |
| Premium | $19.99 | per year |
| Premium features set | $24.99 | per year |
| Premium features set | $24.99 | per year |
| Blood Oxygen＋Body Temperature | $29.99 | per year |
| Premium year | $39.99 | per year |

**What reviewers like**

- ⭐ Awesome app
- ⭐ Very easy to use
- ⭐ Helpful for monitoring health conditions
- ⭐ Detailed data logging

**What reviewers complain about**

- ❌ Doesn't accurately measure blood oxygen levels
- ❌ Requires premium subscription for key features
- ❌ Inconsistent and unreliable performance
- ❌ Deceptive marketing and false advertising
- ❌ No way to contact customer support

**Reported bugs**

- App crashes and freezes frequently
- Inaccurate heart rate and oxygen level readings
- Compatibility issues with certain Apple Watch models

**Requested features**

- Add audible/vibration alerts for low oxygen levels
- Improve automatic oxygen level monitoring
- Provide more control over reading frequency


## Frequently asked questions

### Is Oxi tracker free?

Oxi tracker is free to download, with no in-app purchases.

### Is Blood Oxygen App free?

Blood Oxygen App is free to download, with in-app purchases available.

### Which has better reviews, Oxi tracker or Blood Oxygen App?

Blood Oxygen App is rated higher. Oxi tracker averages 2.2 out of 5 from 62 ratings, while Blood Oxygen App averages 4.6 from 31K ratings.

### Do Oxi tracker or Blood Oxygen App have ads?

Neither Oxi tracker nor Blood Oxygen App shows ads.

### Which is updated more often, Oxi tracker or Blood Oxygen App?

Oxi tracker ships an update every 6 months, and Blood Oxygen App every 2 weeks. Most recently, Oxi tracker was updated on October 29, 2026 and Blood Oxygen App on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*