# HRV Tracker for Watch vs NapBot

The clearest difference is monetization model: NapBot at free with in-app purchases against HRV Tracker for Watch's subscription. NapBot also leads on update cadence (every 11 days vs monthly) and ratings volume (6.3K vs 949). HRV Tracker for Watch's advantage is rating (4.5 vs 4.2) and review sentiment (41% vs 21%). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HRV Tracker for Watch sells 2 in-app purchases, starting at $2.99 per month and NapBot sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

HRV Tracker for Watch holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: NapBot has 6.3K ratings behind it against 949, so its average is the more settled of the two. Written reviews point the same way: 41% of HRV Tracker for Watch's written reviews are positive against 21% of NapBot's.

HRV Tracker for Watch ships an update monthly, NapBot every 11 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | HRV Tracker for Watch | NapBot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (949 ratings)](https://appshunter.io/ios/app/hrv-tracker-for-watch/id1463020956/reviews)** | [4.2 (6.3K ratings)](https://appshunter.io/ios/app/napbot-auto-sleep-tracker/id1476436116/reviews) |
| Number of ratings | 949 | **6.3K** |
| Positive reviews | **41.4% of reviews** | 20.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 25 MB | 16 MB |
| Requires iOS | 18 | **16.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Sydvesti Oy](https://appshunter.io/developer/912783647) | [Majid Jabrayilov](https://appshunter.io/developer/1149412983) |

## What reviewers say

### HRV Tracker for Watch

[App page](https://appshunter.io/ios/app/hrv-tracker-for-watch/id1463020956)

Monitor your body's stress levels and recovery by tracking heart rate variability (HRV) using your Apple Watch. Analyze trends, compare HRV to other health metrics, and receive personalized notifications to understand how daily activities impact your well-being.

**Highlights:** Track short-term and long-term HRV trends, Compare HRV to activity, sleep, and resting heart rate, Receive HRV change notifications on Apple Watch, View HRV Trend Summary (experimental), Integrates with Apple Health app, Capture HRV data via Mindfulness app

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $19.99 | per year |


### NapBot

[App page](https://appshunter.io/ios/app/napbot-auto-sleep-tracker/id1476436116)

Automatically track and analyze your sleep cycles using on-device machine learning. Gain insights into sleep phases, heart rate, and environmental sound exposure to understand and improve your sleep quality. Access historical data and trends with a PRO subscription.

**Highlights:** Automatic sleep tracking, Detailed sleep phase analysis, Environmental sound exposure analysis, Sleep heart rate summary, Sleep history overview, Sleep trend tracking

**Features:** Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NapBot PRO Monthly | $4.99 | per month |
| NapBot PRO Annual | $29.99 | per year |

**What reviewers like**

- 🚀 Accurate sleep tracking
- 👍 Simple and easy to use
- 🚀 Automatic tracking without needing to open the app
- 🚀 Useful for shift workers and those with irregular sleep schedules

**What reviewers complain about**

- 💰 Expensive subscription model
- 🐛 Inaccurate sleep data and tracking
- 🐛 Fails to detect awakenings during the night
- 🐛 Tracks sedentary activities as sleep
- 🐛 Inability to edit or delete incorrect sleep data

**Reported bugs**

- App crashes after purchasing pro version
- Sleep data not syncing or disappearing
- Incorrect time zone and sleep duration displayed
- Fails to track sleep at all on some nights

**Requested features**

- Add ability to manually edit or delete sleep data
- Improve accuracy of sleep tracking
- Provide more detailed sleep analytics and insights
- Offer a one-time purchase option instead of subscription


## Frequently asked questions

### Is HRV Tracker for Watch free?

HRV Tracker for Watch is free to download, with in-app purchases available.

### Is NapBot free?

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

### Which has better reviews, HRV Tracker for Watch or NapBot?

HRV Tracker for Watch is rated higher. HRV Tracker for Watch averages 4.5 out of 5 from 949 ratings, while NapBot averages 4.2 from 6.3K ratings.

### Do HRV Tracker for Watch or NapBot have ads?

Neither HRV Tracker for Watch nor NapBot shows ads.

### Which is updated more often, HRV Tracker for Watch or NapBot?

HRV Tracker for Watch ships an update monthly, and NapBot every 11 days. Most recently, HRV Tracker for Watch was updated on October 29, 2026 and NapBot on October 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.*