# SpO2 Watcher vs PasDuJour

The clearest difference is price: PasDuJour at Free against SpO2 Watcher's $0.99. PasDuJour also leads on update cadence (every 4 days vs every 2 months) and device support (4 vs 2). SpO2 Watcher's advantage is in-app purchases (none vs 1). On ads there is nothing between them.

PasDuJour is free to download; SpO2 Watcher costs $0.99 up front. PasDuJour sells 1 one-off in-app purchase. SpO2 Watcher asks for nothing beyond the download.

SpO2 Watcher ships an update every 2 months, PasDuJour every 4 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | SpO2 Watcher | PasDuJour |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | — |
| Size | 8 MB | 4 MB |
| Requires iOS | 18 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ESCAPADE GLOBAL PRIVATE LIMITED](https://appshunter.io/developer/1207530175) | [Benjamin Dupin](https://appshunter.io/developer/1871474236) |

## What reviewers say

### SpO2 Watcher

[App page](https://appshunter.io/ios/app/spo2-watcher/id6756836222)

This utility app restores blood oxygen level insights to your Apple Watch. It retrieves data from HealthKit and displays it on your watch face and dashboard, offering real-time readings and historical trends. Designed for privacy, your data remains on your device.

**Highlights:** Re-enable watch visibility for SpO2, Real-time blood oxygen dashboards, Advanced watch complications, 24-hour interactive history graph, Automatic background sync, 30-day trend analysis, On-device data storage

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

**In-app purchases:** none


### PasDuJour

[App page](https://appshunter.io/ios/app/pasdujour-step-complications/id6795232703)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pas du Jour Pro | $3.99 | one-time |


## Frequently asked questions

### Is SpO2 Watcher free?

SpO2 Watcher costs $0.99, with no in-app purchases.

### Is PasDuJour free?

PasDuJour is free to download, with in-app purchases available.

### Do SpO2 Watcher or PasDuJour have ads?

Neither SpO2 Watcher nor PasDuJour shows ads.

### Which is updated more often, SpO2 Watcher or PasDuJour?

SpO2 Watcher ships an update every 2 months, and PasDuJour every 4 days. Most recently, SpO2 Watcher was updated on November 9, 2026 and PasDuJour on November 10, 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.*