# Sleep++ vs zZz

The clearest difference is rating: Sleep++ at 4.1 against zZz's 2.9. Sleep++ also leads on review sentiment (39% vs 0%) and ratings volume (5.7K vs 11). zZz's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 months). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Sleep++ sells 1 one-off in-app purchase and zZz sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sleep++ holds the better App Store score, 4.1 against 2.9. That said, the two scores are not equally well evidenced: Sleep++ has 5.7K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 39% of Sleep++'s written reviews are positive against 0% of zZz's.

Sleep++ ships an update every 2 months, zZz every 4 days. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sleep++ | zZz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (5.7K ratings)](https://appshunter.io/ios/app/sleep-plus-plus/id1038440371/reviews)** | [2.9 (11 ratings)](https://appshunter.io/ios/app/zzz-sleep-tracker-widget/id1586436109/reviews) |
| Number of ratings | **5.7K** | 11 |
| Positive reviews | **38.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 6 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Cross Forward Consulting, LLC](https://appshunter.io/developer/295660206) | [Florian Schweizer](https://appshunter.io/developer/1142213239) |

## What reviewers say

### Sleep++

[App page](https://appshunter.io/ios/app/sleep-plus-plus/id1038440371)

This app automatically tracks your sleep duration and quality using your Apple Watch. Gain insights into your rest patterns to improve your sleep routines. Offers both automatic and manual tracking options for personalized control.

**Highlights:** Automatic sleep tracking, Sleep duration measurement, Sleep quality analysis, Manual sleep tracking, Health App integration, Detailed nightly reports

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Development | $1.99 | one-time |

**What reviewers like**

- 🚀 Great tracking
- 👍 Easy to use
- 💡 Detailed sleep data
- 👍 Accurate
- 🚀 Works perfectly with Apple Watch

**What reviewers complain about**

- 🐛 No deeper analysis beyond health app data
- 🐛 Inconsistent output from night to night
- 🐛 Requires going to bed at the same time every day
- 🐛 Fails to account for menstrual cycle changes
- 🐛 Stops working after updates

**Reported bugs**

- Doubles data on some nights
- Misses some nights of sleep
- Incorrectly records awake time as sleep
- Stops working after iOS updates

**Requested features**

- Add sleep diary
- Include pre-sleep factors
- Graph core sleep, deep sleep, and REM over time
- Add alarm that wakes during light sleep
- Integrate with Fitbit data


### 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 Sleep++ free?

Sleep++ 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, Sleep++ or zZz?

Sleep++ is rated higher. Sleep++ averages 4.1 out of 5 from 5.7K ratings, while zZz averages 2.9 from 11 ratings.

### Do Sleep++ or zZz have ads?

Sleep++ shows ads; zZz does not.

### Which is updated more often, Sleep++ or zZz?

Sleep++ ships an update every 2 months, and zZz every 4 days. Most recently, Sleep++ was updated on October 20, 2026 and zZz on October 14, 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.*