# NightBell vs SleepSafe

The clearest difference is rating: NightBell at 5.0 against SleepSafe's 4.5. NightBell also leads on in-app purchases (none vs 2). SleepSafe's advantage is ratings volume (12 vs 3). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. SleepSafe sells 2 in-app purchases, starting at $6.99 per month. NightBell asks for nothing beyond the download.

NightBell holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

NightBell ships an update every 11 days, SleepSafe every 2 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | NightBell | SleepSafe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nightbell/id6449867229/reviews)** | [4.5 (12 ratings)](https://appshunter.io/ios/app/sleepsafe-nightmare-relief/id6470836919/reviews) |
| Number of ratings | 3 | **12** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 weeks |
| Monetization | **Free** | Freemium |
| Size | 4 MB | 58 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Irina Deeva](https://appshunter.io/developer/1752270459) | [Oliver Lerstøl Hebnes](https://appshunter.io/developer/1714300498) |

## What reviewers say

### NightBell

[App page](https://appshunter.io/ios/app/nightbell/id6449867229)

This app monitors for sleepwalking episodes using motion sensors. It triggers a gentle alarm to wake you and can alert household members. A unique task-based system on a smartwatch helps differentiate between sleepwalking and being awake to prevent false alarms.

**Highlights:** Sleepwalking detection via motion sensors, Gentle alarm to wake user, Household member alerts, Smartwatch task for false alarm prevention, Designed for sleepwalker safety

**Features:** macOS Compatibility

**In-app purchases:** none


### SleepSafe

[App page](https://appshunter.io/ios/app/sleepsafe-nightmare-relief/id6470836919)

This app uses your Apple Watch to detect nightmares and night terrors in real-time, gently guiding you back to sleep with haptic feedback. It also offers sleep analysis, a sleep talking recorder, and insights into stress and anxiety.

**Highlights:** Real-time nightmare detection, Gentle haptic interventions, Sleep talking recorder, Comprehensive sleep analysis, Personalized sleep score, Stress & anxiety insights

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $6.99 | per month |
| Yearly Premium | $44.99 | per year |


## Frequently asked questions

### Is NightBell free?

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

### Is SleepSafe free?

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

### Which has better reviews, NightBell or SleepSafe?

NightBell is rated higher. NightBell averages 5.0 out of 5 from 3 ratings, while SleepSafe averages 4.5 from 12 ratings.

### Do NightBell or SleepSafe have ads?

Neither NightBell nor SleepSafe shows ads.

### Which is updated more often, NightBell or SleepSafe?

NightBell ships an update every 11 days, and SleepSafe every 2 weeks. Most recently, NightBell was updated on November 3, 2026 and SleepSafe 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.*