# Hydration Tracker vs Sounds for Sleep

The clearest difference is update cadence: Sounds for Sleep at every 3 days against Hydration Tracker's every 5 weeks. Sounds for Sleep also leads on review sentiment (88% vs 70%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Hydration Tracker sells 10 in-app purchases, starting at $0.99 per 7 days and Sounds for Sleep sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Hydration Tracker against 4.6 for Sounds for Sleep. Both are backed by a comparable volume of ratings — 219 and 82 respectively. Written reviews are what separate them: 70% of Hydration Tracker's written reviews are positive against 88% of Sounds for Sleep's.

Hydration Tracker ships an update every 5 weeks, Sounds for Sleep every 3 days. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Hydration Tracker | Sounds for Sleep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (219 ratings)](https://appshunter.io/ios/app/hydration-tracker-water-pal/id1301879657/reviews) | **[4.6 (82 ratings)](https://appshunter.io/ios/app/sounds-for-sleep-green-noise/id6745609607/reviews)** |
| Number of ratings | **219** | 82 |
| Positive reviews | 69.6% of reviews | **87.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 172 MB | 259 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Loyal Health & Fitness, Inc.](https://appshunter.io/developer/1088263310) | [Viacheslav Khakhulin](https://appshunter.io/developer/558806761) |

## What reviewers say

### Hydration Tracker

[App page](https://appshunter.io/ios/app/hydration-tracker-water-pal/id1301879657)

This app helps you monitor your daily water intake to improve health and energy. It calculates your personalized hydration needs based on various factors and provides reminders to ensure you reach your goals. Log drinks, view progress, and earn achievements to stay motivated.

**Highlights:** Calculate required water intake, Set daily goals, Receive hydration alerts, Log drink times and amounts, Track multiple drink types, View daily consumption graphs, Earn achievements and water tips

**Features:** Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Weekly Trial | $0.99 | per 7 days |
| Water Balance Premium | $1.99 | per month |
| Monthly | $2.99 | per month |
| Monthly Trial | $2.99 | per month |
| Yearly | $5.99 | per year |
| Yearly Trial | $9.99 | per year |
| Loyal Pass Monthly WB | $9.99 | per month |
| Loyal Pass Yearly WB | $59.99 | per year |
| LifeTime Access | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 💧 Helps increase water intake
- 🔔 Reminders are helpful
- 🏆 Badges and awards are motivating
- 🔗 Links with Apple Health

**What reviewers complain about**

- 💸 Ads are unnecessary
- 💳 App requires payment for features
- 🚫 No easy way to close ads
- 🔢 No decimal option for logging
- 🔄 Units and settings not synced

**Reported bugs**

- App crashes frequently
- App freezes when logging drinks
- App closes immediately after logging fluid intake
- Cannot see logged information due to freezing
- Ads pop up on app boot

**Requested features**

- Add decimal option for logging drinks
- Allow customization of notification times
- Include soda and yogurt as drink options
- Improve drink and volume choices
- Provide a clear option to remove ads


### Sounds for Sleep

[App page](https://appshunter.io/ios/app/sounds-for-sleep-green-noise/id6745609607)

Create personalized soundscapes by blending over 50 ambient noises to aid sleep, focus, or relaxation. Customize volume, speed, and EQ for each sound with a smart fade-out timer and dark mode for nighttime use.

**Highlights:** Blend 50+ ambient sounds, Customize volume, speed, and EQ, Smart sleep timer with fade-out, Offline playback, Dark mode for night use, Create custom sound mixes

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $9.99 | per month |
| Yearly Pro | $29.99 | per year |
| Pro | $49.99 | one-time |


## Frequently asked questions

### Is Hydration Tracker free?

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

### Is Sounds for Sleep free?

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

### Which has better reviews, Hydration Tracker or Sounds for Sleep?

Sounds for Sleep is rated higher. Hydration Tracker averages 4.6 out of 5 from 219 ratings, while Sounds for Sleep averages 4.6 from 82 ratings.

### Do Hydration Tracker or Sounds for Sleep have ads?

Both Hydration Tracker and Sounds for Sleep show ads.

### Which is updated more often, Hydration Tracker or Sounds for Sleep?

Hydration Tracker ships an update every 5 weeks, and Sounds for Sleep every 3 days. Most recently, Hydration Tracker was updated on November 11, 2026 and Sounds for Sleep on November 8, 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.*