# SpO2 Watcher vs SleepWise

The clearest difference is price: SleepWise at Free against SpO2 Watcher's $0.99. SpO2 Watcher's advantage is in-app purchases (none vs 3) and chart position (#184 vs unranked). On update cadence, ads, device support and iOS requirement there is nothing between them.

SleepWise is free to download; SpO2 Watcher costs $0.99 up front. SleepWise sells 3 in-app purchases, starting at $0.99 per month. SpO2 Watcher asks for nothing beyond the download.

SpO2 Watcher ships an update every 2 months, SleepWise every 3 months. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SpO2 Watcher | SleepWise |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | — |
| Best chart rank | **#184** | — |
| Size | 8 MB | 20 MB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ESCAPADE GLOBAL PRIVATE LIMITED](https://appshunter.io/developer/1207530175) | [Hexalitics Technology Pvt. Ltd.](https://appshunter.io/developer/1611898082) |

## What reviewers say

### SpO2 Watcher

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

**Currently charting:** #184 Top Paid · Health & Fitness (US App Store)

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


### SleepWise

[App page](https://appshunter.io/ios/app/sleepwise-tracker-and-coach/id6774872846)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $9.99 | per year |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is SpO2 Watcher free?

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

### Is SleepWise free?

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

### Do SpO2 Watcher or SleepWise have ads?

Neither SpO2 Watcher nor SleepWise shows ads.

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

SpO2 Watcher ships an update every 2 months, and SleepWise every 3 months. Most recently, SpO2 Watcher was updated on October 25, 2026 and SleepWise on October 14, 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.*