# Sleep Sounds vs Hydro+

The clearest difference is ads: Hydro+ at none against Sleep Sounds's shown. Hydro+ also leads on update cadence (every 10 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Sleep Sounds sells 2 in-app purchases, starting at $2.99 per 7 days and Hydro+ sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sleep Sounds ships an update every 2 months, Hydro+ every 10 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Sleep Sounds | Hydro+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 277 MB | 10 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ZEYNEP BERBER](https://appshunter.io/developer/1861310793) | [Javaria Tariq](https://appshunter.io/developer/1896630344) |

## What reviewers say

### Sleep Sounds

[App page](https://appshunter.io/ios/app/sleep-sounds-snopy/id6761815274)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snopy Pro Weekly | $2.99 | per 7 days |
| Snopy Pro Yearly | $24.99 | per year |


### Hydro+

[App page](https://appshunter.io/ios/app/hydro-plus-water-tracker/id6774930347)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $19.99 | per year |
| Hydro+ Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Sleep Sounds free?

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

### Is Hydro+ free?

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

### Do Sleep Sounds or Hydro+ have ads?

Sleep Sounds shows ads; Hydro+ does not.

### Which is updated more often, Sleep Sounds or Hydro+?

Sleep Sounds ships an update every 2 months, and Hydro+ every 10 days. Most recently, Sleep Sounds was updated on October 28, 2026 and Hydro+ on October 28, 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.*