# Pink Noise Generator vs HydroCrew

The clearest difference is in-app purchases: HydroCrew at none against Pink Noise Generator's 4. HydroCrew also leads on update cadence (daily vs every 4 months) and rating (5.0 vs 4.7). Pink Noise Generator's advantage is ratings volume (700 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Pink Noise Generator sells 4 in-app purchases, starting at $24.99 per year. HydroCrew asks for nothing beyond the download.

HydroCrew holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Pink Noise Generator has 700 ratings behind it against 1, so its average is the more settled of the two.

Pink Noise Generator ships an update every 4 months, HydroCrew daily. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Pink Noise Generator | HydroCrew |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (700 ratings)](https://appshunter.io/ios/app/pink-noise-generator/id6450889576/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydrocrew/id6781432070/reviews)** |
| Number of ratings | **700** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 95 MB | 15 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CRAFTDEV](https://appshunter.io/developer/1579108099) | [Nicholas Prill](https://appshunter.io/developer/1592516747) |

## What reviewers say

### Pink Noise Generator

[App page](https://appshunter.io/ios/app/pink-noise-generator/id6450889576)

This app uses pink noise frequencies to promote deep, restful sleep. It offers a calming auditory experience with features like Airplay streaming, customizable timers, and a fade-out option. It also includes curated sounds like rainfall and ocean waves, and a specialized mode for infant sleep.

**Highlights:** Pink noise soundscapes, Infant sleep mode, Airplay streaming, Customizable timer, Fade-out volume control, Variety of curated sounds

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly subscription | $24.99 | per year |
| Pink Noise Premium Yearly | $34.99 | per year |
| Pink Noise Premium Yearly | $59.99 | per year |
| Pink Noise Premium Yearly | $79.99 | per year |

**What reviewers like**

- 😴 Highly effective for sleep and insomnia
- 🎵 Wide variety of sound options and color noise types
- 🎚️ Ability to blend and combine multiple sounds
- 💾 Save custom sound presets
- 🧘 Soothing and relaxing audio quality

**What reviewers complain about**

- 💸 Sudden paywall implementation without notice
- ⏸️ App constantly pauses or shuts down unexpectedly
- 🚫 Poor customer service and no response to inquiries
- 🔔 Excessive pop-ups for reviews and premium upgrades
- 🎭 False advertising about free features

**Reported bugs**

- App pauses or stops playing unexpectedly
- App shuts down when closed, interrupting sleep
- Auto-billing despite cancellation attempts
- Inability to find cancellation settings
- Inconsistent trial period information

**Requested features**

- Background play when app is closed
- Reduce or eliminate review pop-up notifications
- Clear cancellation process and options
- Better notification system for trial period ending


### HydroCrew

[App page](https://appshunter.io/ios/app/hydrocrew/id6781432070)

This app gamifies hydration by allowing users to join crews and compete with friends to reach daily water intake goals. Track your progress, climb leaderboards, and stay motivated through friendly competition.

**Highlights:** Track daily water intake, Real-time crew leaderboards, Invite friends to join crews, Set custom hydration goals, Pull to refresh for updates

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

**In-app purchases:** none


## Frequently asked questions

### Is Pink Noise Generator free?

Pink Noise Generator is free to download, with in-app purchases available.

### Is HydroCrew free?

HydroCrew is free to download, with no in-app purchases.

### Which has better reviews, Pink Noise Generator or HydroCrew?

HydroCrew is rated higher. Pink Noise Generator averages 4.7 out of 5 from 700 ratings, while HydroCrew averages 5.0 from 1 ratings.

### Do Pink Noise Generator or HydroCrew have ads?

Neither Pink Noise Generator nor HydroCrew shows ads.

### Which is updated more often, Pink Noise Generator or HydroCrew?

Pink Noise Generator ships an update every 4 months, and HydroCrew daily. Most recently, Pink Noise Generator was updated on October 25, 2026 and HydroCrew on October 22, 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.*