# SleepSafe vs Stress Tracker HRV

The clearest difference is price: SleepSafe at Free against Stress Tracker HRV's $7.99. SleepSafe also leads on update cadence (every 2 weeks vs every 5 weeks) and ratings volume (11 vs 2). Stress Tracker HRV's advantage is rating (5.0 vs 4.5) and in-app purchases (none vs 2). On review sentiment, ads and device support there is nothing between them.

SleepSafe is free to download; Stress Tracker HRV costs $7.99 up front. SleepSafe sells 2 in-app purchases, starting at $6.99 per month. Stress Tracker HRV asks for nothing beyond the download.

Stress Tracker HRV holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: SleepSafe has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

SleepSafe ships an update every 2 weeks, Stress Tracker HRV every 5 weeks. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | SleepSafe | Stress Tracker HRV |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | [4.5 (11 ratings)](https://appshunter.io/ios/app/sleepsafe-nightmare-relief/id6470836919/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stress-tracker-hrv/id6748257580/reviews)** |
| Number of ratings | **11** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | **Freemium** | Paid |
| Size | 51 MB | 5 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Lerstøl Hebnes](https://appshunter.io/developer/1714300498) | [Alvaro Garcia Pizarro](https://appshunter.io/developer/1822790774) |

## What reviewers say

### SleepSafe

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

This app uses your Apple Watch to detect and gently interrupt nightmares, sleepwalking, and night terrors. It offers features like sleep talking recording, personalized sleep analysis, and stress monitoring to help you achieve calmer, more restful sleep.

**Highlights:** Real-time nightmare detection, Sleep talking recorder, Gentle haptic interventions, Night terror protection, Comprehensive sleep analysis, Stress & anxiety monitoring

**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 |


### Stress Tracker HRV

[App page](https://appshunter.io/ios/app/stress-tracker-hrv/id6748257580)

Monitor your body's stress levels, sleep quality, and recovery using Heart Rate Variability (HRV) data from your Apple Watch. Gain insights into your mental and physical well-being to make informed decisions about rest and activity.

**Highlights:** Real-time stress tracking via HRV, Daily and weekly stress trend analysis, Recovery Index for bounce-back assessment, Sleep score and optimization insights, On-device data privacy

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is SleepSafe free?

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

### Is Stress Tracker HRV free?

Stress Tracker HRV costs $7.99, with no in-app purchases.

### Which has better reviews, SleepSafe or Stress Tracker HRV?

Stress Tracker HRV is rated higher. SleepSafe averages 4.5 out of 5 from 11 ratings, while Stress Tracker HRV averages 5.0 from 2 ratings.

### Do SleepSafe or Stress Tracker HRV have ads?

Neither SleepSafe nor Stress Tracker HRV shows ads.

### Which is updated more often, SleepSafe or Stress Tracker HRV?

SleepSafe ships an update every 2 weeks, and Stress Tracker HRV every 5 weeks. Most recently, SleepSafe was updated on October 25, 2026 and Stress Tracker HRV on October 6, 2026.

---

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