# Sleepzy vs Hydrate

The clearest difference is update cadence: Hydrate at fortnightly against Sleepzy's monthly. Sleepzy's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sleepzy sells 13 in-app purchases, starting at $3.99 per 7 days and Hydrate sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sleepzy ships an update monthly, Hydrate fortnightly. The most recent releases landed on November 3, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Sleepzy | Hydrate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (22K ratings)](https://appshunter.io/ios/app/sleepzy-sleep-cycle-tracker/id1064910141/reviews)** | — |
| Number of ratings | **22K** | — |
| Positive reviews | 37.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Freemium | — |
| Size | 270 MB | 32 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Mosaic S.r.l.](https://appshunter.io/developer/570748343) | [OBRT NUCLEUS Mostar](https://appshunter.io/developer/1717317183) |

## What reviewers say

### Sleepzy

[App page](https://appshunter.io/ios/app/sleepzy-sleep-cycle-tracker/id1064910141)

This smart alarm clock tracks sleep patterns, wakes you gently during your lightest sleep phase, and analyzes sleep quality. It provides insights into sleep debt, offers relaxing sounds to help you unwind, and can sync with health apps for comprehensive data tracking.

**Highlights:** Smart alarm wakes you in lightest sleep phase, Sleep pattern tracking and analysis, Sleep debt and quality monitoring, Relaxing sounds and AI music for sleep, Weekly sleep statistics and insights, Snore detection (Premium feature), Syncs with Apple Health

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleepzy Premium 1 Week | $3.99 | per 7 days |
| Sleepzy Premium 1 Month | $4.99 | per month |
| Sleepzy Premium 1 Week | $4.99 | per 7 days |
| Sleepzy Pro | $4.99 | per 7 days |
| Sleepzy Pro | $4.99 | per 7 days |
| Sleepzy Premium 1 Month | $6.99 | per month |
| Sleepzy Premium 1 Month | $6.99 | per month |
| Sleepzy Pro | $7.99 | per 7 days |
| Sleepzy Premium 3 Months | $9.99 | per 3 months |
| Sleepzy Premium 1 Year | $14.99 | per year |
| Sleepzy Premium 1 Year | $29.99 | per year |
| Sleepzy Premium 1 Year | $69.99 | per year |
| Sleepzy Premium 1 Year | $89.99 | per year |

**What reviewers like**

- 🚀 Effective alarm clock
- 👍 Customizable alarm sounds
- 🌙 Sleep tracking features
- 💤 Gradual wake-up process

**What reviewers complain about**

- 🐛 Inaccurate sleep tracking
- 🔋 Drains phone battery
- 🔒 Privacy concerns with microphone
- 💰 Overly aggressive upselling of premium features

**Reported bugs**

- Alarm not going off as scheduled
- App crashing or freezing
- Inconsistent data recording

**Requested features**

- Integration with other sleep/health apps
- More detailed sleep analysis and insights
- Ability to adjust alarm time range
- Nap tracking and alarm


### Hydrate

[App page](https://appshunter.io/ios/app/hydrate-water-intake-tracker/id6820476829)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $8.99 | one-time |


## Frequently asked questions

### Is Sleepzy free?

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

### Is Hydrate free?

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

### Do Sleepzy or Hydrate have ads?

Both Sleepzy and Hydrate show ads.

### Which is updated more often, Sleepzy or Hydrate?

Sleepzy ships an update monthly, and Hydrate fortnightly. Most recently, Sleepzy was updated on November 3, 2026 and Hydrate 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.*