# S+ by ResMed vs MutLab

The clearest difference is update cadence: S+ by ResMed at monthly against MutLab's every 2 months. S+ by ResMed also leads on iOS requirement (7.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

S+ by ResMed ships an update monthly, MutLab every 2 months. The most recent releases landed on August 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | S+ by ResMed | MutLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (125 ratings)](https://appshunter.io/ios/app/s-plus-by-resmed/id883611019/reviews)** | — |
| Number of ratings | **125** | — |
| Positive reviews | 8.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 105 MB | 60 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Resmed](https://appshunter.io/developer/436108755) | [Mutlab](https://appshunter.io/developer/1363984051) |

## What reviewers say

### S+ by ResMed

[App page](https://appshunter.io/ios/app/s-plus-by-resmed/id883611019)

Monitor your sleep patterns with a dedicated unit and receive personalized insights to fall asleep faster and improve sleep quality. Features include guided relaxation, a smart alarm, and tools to clear your mind before bed.

**Highlights:** Personalized sleep suggestions (S+ Mentor), Breathing-synchronized relaxation sounds, Voice and text memo recording (Mind Clear), Smart alarm for optimal wake-up time, Sleep pattern charts and analysis, Sleep phase analysis

**In-app purchases:** none

**What reviewers like**

- ✅ Accurate sleep data tracking
- 💡 Non-contact sleep monitoring technology
- 🎵 Doze-off sounds feature with breathing rhythm matching
- ⭐ Well-built hardware
- 📊 Useful sleep insights when functioning

**What reviewers complain about**

- 🚫 App completely non-functional for most users
- 🔐 Login and account creation failures
- ⚠️ No customer support or contact information
- 📱 Incompatible with modern iOS versions
- 🐛 Frequent crashes and freezes

**Reported bugs**

- Unknown error during account creation and login
- App crashes on startup with iOS 12+, iOS 13, iOS 14, iOS 15+
- Sync failures between app and device
- Bluetooth pairing failures
- App freezes and becomes unresponsive

**Requested features**

- Automatic sleep detection and tracking
- Integration with Apple Watch and CPAP devices
- Snooze feature and multiple alarm support
- Sleep trend analysis and graphs in app
- Ability to delete sleep records


### MutLab

[App page](https://appshunter.io/ios/app/mutlab/id1576343740)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is S+ by ResMed free?

S+ by ResMed is free to download, with no in-app purchases.

### Is MutLab free?

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

### Do S+ by ResMed or MutLab have ads?

Neither S+ by ResMed nor MutLab shows ads.

### Which is updated more often, S+ by ResMed or MutLab?

S+ by ResMed ships an update monthly, and MutLab every 2 months. Most recently, S+ by ResMed was updated on August 16, 2026 and MutLab 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.*