# Rem vs NightBell

The clearest difference is review sentiment: NightBell at 100% against Rem's 38%. NightBell also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 8). Rem's advantage is ratings volume (2.7K vs 3). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Rem sells 8 in-app purchases, starting at $4.99 per month. NightBell asks for nothing beyond the download.

NightBell holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Rem has 2.7K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 38% of Rem's written reviews are positive against 100% of NightBell's.

Rem ships an update every 6 weeks, NightBell every 11 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rem | NightBell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (2.7K ratings)](https://appshunter.io/ios/app/rem-auto-sleep-tracker-watch/id1534499292/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nightbell/id6449867229/reviews)** |
| Number of ratings | **2.7K** | 3 |
| Positive reviews | 37.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 102 MB | 4 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [WELLBEINE TECHNOLOGIES INC](https://appshunter.io/developer/1529157912) | [Irina Deeva](https://appshunter.io/developer/1752270459) |

## What reviewers say

### Rem

[App page](https://appshunter.io/ios/app/rem-auto-sleep-tracker-watch/id1534499292)

This app automatically tracks your sleep cycles using your Apple Watch, providing detailed analysis of your sleep patterns. It offers insights into sleep quality, disruptions, and heart rate, helping you understand and improve your rest.

**Highlights:** Automatic sleep tracking, Sleep pattern analysis, Snore detection, Sleep score and breakdown, Heart rate analysis, Smart alarm clock

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| 3 Month Subscription | $19.49 | per 3 months |
| 6 Month Subscription | $25.99 | per 6 months |
| Yearly Subscription | $29.99 | per year |
| Yearly Subscription | $29.99 | per year |
| Rem Premium | $29.99 | per year |
| Yearly Subscription | $59.99 | per year |
| Lifetime Subscription | $49.99 | one-time |

**What reviewers like**

- 🚀 Accurate sleep tracking
- 📊 Detailed sleep data
- 🔍 Helpful for monitoring sleep issues
- 👍 Simple and intuitive interface
- 💤 Tracks naps

**What reviewers complain about**

- 🐛 Inconsistent data recording
- ⏰ Inaccurate sleep/wake times
- 💰 Expensive subscription
- 🔇 Snoring/noise tracking not working
- 🔄 Changing/inconsistent sleep results

**Reported bugs**

- App crashes or freezes
- Disconnection issues with Apple Watch
- Lack of customer support responsiveness

**Requested features**

- Historical sleep data and trends
- Ability to edit sleep times
- Improved smart alarm functionality
- Better integration with Apple Health
- More customization options


### 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


## Frequently asked questions

### Is Rem free?

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

### Is NightBell free?

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

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

NightBell is rated higher. Rem averages 4.2 out of 5 from 2.7K ratings, while NightBell averages 5.0 from 3 ratings.

### Do Rem or NightBell have ads?

Neither Rem nor NightBell shows ads.

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

Rem ships an update every 6 weeks, and NightBell every 11 days. Most recently, Rem was updated on October 29, 2026 and NightBell on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*