# SleepImage vs Smith Performance Center

The clearest difference is rating: Smith Performance Center at 5.0 against SleepImage's 3.1. SleepImage's advantage is ratings volume (186 vs 9). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Smith Performance Center holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: SleepImage has 186 ratings behind it against 9, so its average is the more settled of the two.

SleepImage ships an update monthly, Smith Performance Center every 3 weeks. Both last shipped on November 7, 2026.

## The numbers

| Metric | SleepImage | Smith Performance Center |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (186 ratings)](https://appshunter.io/ios/app/sleepimage/id1504760736/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/smith-performance-center/id6443876513/reviews)** |
| Number of ratings | **186** | 9 |
| Positive reviews | 30.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 27 MB | 397 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SleepImage](https://appshunter.io/developer/1504760405) | [Smith Performance Center LLC](https://appshunter.io/developer/1650194309) |

## What reviewers say

### 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


### Smith Performance Center

[App page](https://appshunter.io/ios/app/smith-performance-center/id6443876513)

This app offers guided physical therapy and strength training programs to help users manage their health and live an active lifestyle. It provides easy-to-follow workouts, access to coaches for motivation, and injury rehabilitation exercises.

**Highlights:** Easy workout programs on phone, Access training on the go, Coach communication for accountability, Injury rehabilitation exercises, Sync with Apple Health

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

**In-app purchases:** none


## Frequently asked questions

### Is SleepImage free?

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

### Is Smith Performance Center free?

Smith Performance Center is free to download, with no in-app purchases.

### Which has better reviews, SleepImage or Smith Performance Center?

Smith Performance Center is rated higher. SleepImage averages 3.1 out of 5 from 186 ratings, while Smith Performance Center averages 5.0 from 9 ratings.

### Do SleepImage or Smith Performance Center have ads?

Neither SleepImage nor Smith Performance Center shows ads.

### Which is updated more often, SleepImage or Smith Performance Center?

SleepImage ships an update monthly, and Smith Performance Center every 3 weeks. Most recently, SleepImage was updated on November 7, 2026 and Smith Performance Center 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.*