# SleepSpace vs Stealth Performance

The clearest difference is rating: Stealth Performance at 5.0 against SleepSpace's 4.2. Stealth Performance also leads on in-app purchases (none vs 14) and iOS requirement (11.0.0 vs 18.0). SleepSpace's advantage is update cadence (weekly vs every 45 months) and ratings volume (856 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. SleepSpace sells 13 in-app purchases, starting at $6.99 per month. Stealth Performance asks for nothing beyond the download.

Stealth Performance holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: SleepSpace has 856 ratings behind it against 2, so its average is the more settled of the two.

SleepSpace ships an update weekly, Stealth Performance every 45 months. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SleepSpace | Stealth Performance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (856 ratings)](https://appshunter.io/ios/app/sleepspace-deep-sleep-tonight/id1193763939/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stealth-performance/id1583234736/reviews)** |
| Number of ratings | **856** | 2 |
| Positive reviews | 56.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 45 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 167 MB | 65 MB |
| Requires iOS | 18.0 | **11.0.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Proactive Life Inc](https://appshunter.io/developer/328349390) | [Ben Novak](https://appshunter.io/developer/1583234738) |

## What reviewers say

### SleepSpace

[App page](https://appshunter.io/ios/app/sleepspace-deep-sleep-tonight/id1193763939)

This app helps you fall asleep faster, sleep more deeply, and wake up refreshed with adaptive sounds, smart alarms, and personalized sleep tracking. It functions as a complete sleep system, integrating with your phone, wearables, or smart bedroom devices to strengthen natural sleep rhythms.

**Highlights:** Adaptive sounds for falling asleep, Smart alarm for refreshed waking, Personalized sleep tracking, Integration with wearables and smart devices, AI-powered sleep assistant, Privacy-first design

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Subscription | $6.99 | per month |
| Legacy Dave Asprey Monthly | $6.99 | per month |
| Premium Monthly Subscription | $12.99 | per month |
| Premium Monthly Subscription | $12.99 | per month |
| Premium Monthly Subscription | $12.99 | per month |
| Premium Yearly Subscription | $39.99 | per year |
| Legacy Dave Asprey Yearly | $49.99 | per year |
| Premium Yearly Subscription | $79.00 | per year |
| Premium Yearly Subscription | $79.00 | per year |
| Premium Yearly Subscription | $79.00 | per year |
| Sage Rader Inceptions | $19.99 | one-time |
| Lifetime SleepSpace Premium | $199.99 | one-time |
| Dave Asprey Lifetime | $199.99 | one-time |

**What reviewers like**

- 🚀 Deeper sleep
- 👍 Easy to use sleep diary
- 🔒 Integrates with wearables
- 👍 Helpful sleep coaching
- 🚀 Improved sleep quality

**What reviewers complain about**

- 🐛 Buggy and crashes
- 🔋 Battery drain
- 👎 Requires full access to health data
- 👎 Obnoxious free trial pop-ups
- 👎 Inaccurate sleep tracking

**Reported bugs**

- Frequent crashes
- Unreliable sleep data
- Connectivity issues with Apple Watch
- Notifications not working as expected

**Requested features**

- Fade in/out for sounds
- Offline mode support
- More customization options
- Better integration with other wearables
- Improved sleep analysis and reporting


### Stealth Performance

[App page](https://appshunter.io/ios/app/stealth-performance/id1583234736)

Manage your fitness routine with class booking, schedule management, and workout tracking. Receive real-time updates and personalized notifications to stay motivated and connected with your fitness community. Access exclusive content and instructor profiles to enhance your training.

**Highlights:** Book and manage classes, Track workouts, Real-time class availability, Personalized notifications, Fitness community connection, Exclusive content access, Instructor profiles

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SleepSpace free?

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

### Is Stealth Performance free?

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

### Which has better reviews, SleepSpace or Stealth Performance?

Stealth Performance is rated higher. SleepSpace averages 4.2 out of 5 from 856 ratings, while Stealth Performance averages 5.0 from 2 ratings.

### Do SleepSpace or Stealth Performance have ads?

Neither SleepSpace nor Stealth Performance shows ads.

### Which is updated more often, SleepSpace or Stealth Performance?

SleepSpace ships an update weekly, and Stealth Performance every 45 months. Most recently, SleepSpace was updated on September 27, 2026 and Stealth Performance on September 29, 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.*