# PulseOximeter vs Blood Oxygen Level

The clearest difference is rating: Blood Oxygen Level at 3.9 against PulseOximeter's 1.8. Blood Oxygen Level also leads on ratings volume (190 vs 23). PulseOximeter's advantage is in-app purchases (none vs 1) and iOS requirement (9.3 vs 14.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Blood Oxygen Level sells 1 in-app purchase, starting at $9.99 per month. PulseOximeter asks for nothing beyond the download.

Blood Oxygen Level holds the better App Store score, 3.9 against 1.8. That said, the two scores are not equally well evidenced: Blood Oxygen Level has 190 ratings behind it against 23, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

PulseOximeter ships an update every 2 months, Blood Oxygen Level every 5 weeks. The most recent releases landed on September 7, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | PulseOximeter | Blood Oxygen Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (23 ratings)](https://appshunter.io/ios/app/pulseoximeter/id975203512/reviews) | **[3.9 (190 ratings)](https://appshunter.io/ios/app/blood-oxygen-level-analyzer/id1595757329/reviews)** |
| Number of ratings | 23 | **190** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | **Free** | Subscription |
| Size | 3 MB | 22 MB |
| Requires iOS | **9.3** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Custom Software & Electronics](https://appshunter.io/developer/953947403) | [Svetlana Rabosh](https://appshunter.io/developer/1614133369) |

## What reviewers say

### PulseOximeter

[App page](https://appshunter.io/ios/app/pulseoximeter/id975203512)

Monitor vital health metrics like blood oxygen saturation, pulse rate, and respiration rate. This application requires a certified CSE Medical pulse oximeter device for operation.

**Highlights:** Bluetooth connectivity, Blood oxygen saturation monitoring (%SpO2), Pulse rate tracking, Respiration rate measurement, Fischer Index, Perfusion Index

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Blood Oxygen Level

[App page](https://appshunter.io/ios/app/blood-oxygen-level-analyzer/id1595757329)

Track your blood oxygen saturation levels and monitor changes over time. Log additional symptoms to gain a more comprehensive understanding of your condition. Supports multiple user profiles and synchronizes with HealthKit for pulse and oxygen data.

**Highlights:** Oxygen saturation tracking, Symptom logging, History of changes, Multiple user profiles, HealthKit synchronization

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blood Oxygen Monitor One Month | $9.99 | per month |


## Frequently asked questions

### Is PulseOximeter free?

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

### Is Blood Oxygen Level free?

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

### Which has better reviews, PulseOximeter or Blood Oxygen Level?

Blood Oxygen Level is rated higher. PulseOximeter averages 1.8 out of 5 from 23 ratings, while Blood Oxygen Level averages 3.9 from 190 ratings.

### Do PulseOximeter or Blood Oxygen Level have ads?

Neither PulseOximeter nor Blood Oxygen Level shows ads.

### Which is updated more often, PulseOximeter or Blood Oxygen Level?

PulseOximeter ships an update every 2 months, and Blood Oxygen Level every 5 weeks. Most recently, PulseOximeter was updated on September 7, 2026 and Blood Oxygen Level on September 21, 2026.

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