# SnoreO2 vs SleepImage

SnoreO2 and SleepImage both sit at 3.1 stars, but that hides the real split: 30% of SleepImage's written reviews are positive against 13% of SnoreO2's. SleepImage also leads on ratings volume (186 vs 16). SnoreO2's advantage is iOS requirement (8.0 vs 16.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.1 for SnoreO2 against 3.1 for SleepImage. That said, the two scores are not equally well evidenced: SleepImage has 186 ratings behind it against 16, so its average is the more settled of the two. Written reviews are what separate them: 13% of SnoreO2's written reviews are positive against 30% of SleepImage's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 8, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | SnoreO2 | SleepImage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (16 ratings)](https://appshunter.io/ios/app/snoreo2/id1224541466/reviews) | **[3.1 (186 ratings)](https://appshunter.io/ios/app/sleepimage/id1504760736/reviews)** |
| Number of ratings | 16 | **186** |
| Positive reviews | 13.3% of reviews | **30.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | Free |
| Size | 21 MB | 27 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Viatom Technology Co., Ltd.](https://appshunter.io/developer/888642115) | [SleepImage](https://appshunter.io/developer/1504760405) |

## What reviewers say

### SnoreO2

[App page](https://appshunter.io/ios/app/snoreo2/id1224541466)

This app pairs with a wearable device to monitor your oxygen levels, heart rate, and motion during sleep. It analyzes your sleep patterns and uses smart vibration to help alleviate breathing issues caused by snoring.

**Highlights:** Bluetooth data history storage, Real-time oxygen and heart rate monitoring, Graphic sleep reports with analysis, Short/long term trend tracking, Smart vibration threshold and strength settings, Device firmware upgrades

**Features:** macOS Compatibility

**In-app purchases:** none


### SleepImage

[App page](https://appshunter.io/ios/app/sleepimage/id1504760736)

This app records, transfers, and analyzes sleep quality data when paired with specific devices. It offers a simple, intuitive experience for understanding sleep diagnostics and empowering better health decisions. It is designed for reliability and accuracy, turning complex sleep information into actionable insights.

**Highlights:** Record sleep quality data, Transfer sleep data, Analyze sleep quality, Pair with SleepImage devices, Intuitive user experience, Actionable sleep insights

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easiest apnea testing method
- 👍 Comfortable and least obstructive
- 👍 Simple to use
- 👍 Game changer sleep study
- 👍 Excellent device

**What reviewers complain about**

- 🐛 Error messages on patient ID entry
- 🐛 Device disconnects frequently
- 🐛 Uploads get stuck
- 🐛 Data not received by clinic
- 🐛 Confusing setup instructions

**Reported bugs**

- Error messages when entering patient ID
- Device disconnects
- Uploads get stuck
- Data not received by sleep clinic
- App doesn't work on newer iPhones/Android

**Requested features**

- Notification for Bluetooth disconnection
- Notification for recording stoppage
- App continues to collect and sync data when closed
- Option to bypass email sign-up
- Improved customer service


## Frequently asked questions

### Is SnoreO2 free?

SnoreO2 is free to download, with no in-app purchases.

### Is SleepImage free?

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

### Which has better reviews, SnoreO2 or SleepImage?

SleepImage is rated higher. SnoreO2 averages 3.1 out of 5 from 16 ratings, while SleepImage averages 3.1 from 186 ratings.

### Do SnoreO2 or SleepImage have ads?

Neither SnoreO2 nor SleepImage shows ads.

### Which is updated more often, SnoreO2 or SleepImage?

SnoreO2 ships an update monthly, and SleepImage monthly. Most recently, SnoreO2 was updated on November 8, 2026 and SleepImage on November 7, 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.*