# NapBot vs zZz

The clearest difference is rating: NapBot at 4.2 against zZz's 2.9. NapBot also leads on ratings volume (6.3K vs 11) and review sentiment (21% vs 0%). zZz's advantage is update cadence (every 4 days vs every 11 days). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. NapBot sells 2 in-app purchases, starting at $4.99 per month and zZz sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NapBot holds the better App Store score, 4.2 against 2.9. That said, the two scores are not equally well evidenced: NapBot has 6.3K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 21% of NapBot's written reviews are positive against 0% of zZz's.

NapBot ships an update every 11 days, zZz every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NapBot | zZz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (6.3K ratings)](https://appshunter.io/ios/app/napbot-auto-sleep-tracker/id1476436116/reviews)** | [2.9 (11 ratings)](https://appshunter.io/ios/app/zzz-sleep-tracker-widget/id1586436109/reviews) |
| Number of ratings | **6.3K** | 11 |
| Positive reviews | **20.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 16 MB | 6 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Majid Jabrayilov](https://appshunter.io/developer/1149412983) | [Florian Schweizer](https://appshunter.io/developer/1142213239) |

## What reviewers say

### 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


### zZz

[App page](https://appshunter.io/ios/app/zzz-sleep-tracker-widget/id1586436109)

Easily log your sleep with a single tap using home or lock screen widgets. Track time in bed, awake time, and actual sleep duration, syncing data with Apple Health for insightful analysis.

**Highlights:** One-tap sleep logging, Home and lock screen widgets, Tracks time in bed, awake, and sleep, Syncs with Apple Health, Siri and Shortcuts integration

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Tier | $0.99 | one-time |


## Frequently asked questions

### Is NapBot free?

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

### Is zZz free?

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

### Which has better reviews, NapBot or zZz?

NapBot is rated higher. NapBot averages 4.2 out of 5 from 6.3K ratings, while zZz averages 2.9 from 11 ratings.

### Do NapBot or zZz have ads?

Neither NapBot nor zZz shows ads.

### Which is updated more often, NapBot or zZz?

NapBot ships an update every 11 days, and zZz every 4 days. Most recently, NapBot was updated on October 25, 2026 and zZz 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.*