# Sleep Time+ Cycle Alarm Clock vs zZz

The clearest difference is review sentiment: Sleep Time+ Cycle Alarm Clock at 69% against zZz's 0%. Sleep Time+ Cycle Alarm Clock also leads on rating (4.8 vs 2.9) and ratings volume (2.5K vs 11). zZz's advantage is monetization model (free with in-app purchases vs subscription) and ads (none vs shown). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Sleep Time+ Cycle Alarm Clock sells 8 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.

Sleep Time+ Cycle Alarm Clock holds the better App Store score, 4.8 against 2.9. That said, the two scores are not equally well evidenced: Sleep Time+ Cycle Alarm Clock has 2.5K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 69% of Sleep Time+ Cycle Alarm Clock's written reviews are positive against 0% of zZz's.

Sleep Time+ Cycle Alarm Clock ships an update monthly, zZz every 4 days. The most recent releases landed on November 10, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Sleep Time+ Cycle Alarm Clock | zZz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (2.5K ratings)](https://appshunter.io/ios/app/sleep-time-plus-cycle-alarm-clock/id498360026/reviews)** | [2.9 (11 ratings)](https://appshunter.io/ios/app/zzz-sleep-tracker-widget/id1586436109/reviews) |
| Number of ratings | **2.5K** | 11 |
| Positive reviews | **68.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 185 MB | 6 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Azumio Inc.](https://appshunter.io/developer/439290207) | [Florian Schweizer](https://appshunter.io/developer/1142213239) |

## What reviewers say

### Sleep Time+ Cycle Alarm Clock

[App page](https://appshunter.io/ios/app/sleep-time-plus-cycle-alarm-clock/id498360026)

Understand your sleep patterns and wake up feeling refreshed. This app tracks sleep cycles, offers soothing soundscapes for falling asleep, and measures resting heart rate without wearables. It provides detailed analysis and customizable alarms to optimize your sleep and wake-up experience.

**Highlights:** Sleep cycle analysis, Soothing soundscapes, Resting heart rate measurement, Smart alarm clock, Detailed sleep graphs, Apple Health integration

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per month |
| Premium | $8.99 | per month |
| Premium | $9.99 | per month |
| Premium | $9.99 | per month |
| Premium | $19.99 | per 3 months |
| Premium | $29.99 | per year |
| Premium | $29.99 | per year |
| Premium | $46.99 | per year |

**What reviewers like**

- 🚀 Helps track sleep patterns
- 👍 Gentle alarm wakes you up
- 🌊 Soundscapes help fall asleep
- 💤 Provides sleep quality insights

**What reviewers complain about**

- 🐛 Alarm issues (fails to go off, resets unexpectedly)
- 🔋 Battery drain
- 💰 Paywall for core features
- 🤖 Inaccurate sleep tracking

**Reported bugs**

- Crashes on startup
- Freezing issues
- Inconsistent alarm behavior
- Lost sleep data after updates

**Requested features**

- Heart rate monitoring integration
- Sleep data export and analysis
- Apple Watch companion app
- More customization options


### 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 Time+ Cycle Alarm Clock free?

Sleep Time+ Cycle Alarm Clock 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 Time+ Cycle Alarm Clock or zZz?

Sleep Time+ Cycle Alarm Clock is rated higher. Sleep Time+ Cycle Alarm Clock averages 4.8 out of 5 from 2.5K ratings, while zZz averages 2.9 from 11 ratings.

### Do Sleep Time+ Cycle Alarm Clock or zZz have ads?

Sleep Time+ Cycle Alarm Clock shows ads; zZz does not.

### Which is updated more often, Sleep Time+ Cycle Alarm Clock or zZz?

Sleep Time+ Cycle Alarm Clock ships an update monthly, and zZz every 4 days. Most recently, Sleep Time+ Cycle Alarm Clock was updated on November 10, 2026 and zZz on November 11, 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.*