# 海豚睡眠 vs Lull

The clearest difference is review sentiment: Lull at 92% against 海豚睡眠's 0%. Lull also leads on rating (4.7 vs 3.0) and ratings volume (735 vs 1). 海豚睡眠's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Lull sells 3 in-app purchases, starting at $4.99 per month. 海豚睡眠 asks for nothing beyond the download.

Lull holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Lull has 735 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of 海豚睡眠's written reviews are positive against 92% of Lull's.

海豚睡眠 ships an update every 2 months, Lull every 6 weeks. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 海豚睡眠 | Lull |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/plus/id1282950152/reviews) | **[4.7 (735 ratings)](https://appshunter.io/ios/app/lull-white-noise-for-sleep/id1500423385/reviews)** |
| Number of ratings | 1 | **735** |
| Positive reviews | 0.0% of reviews | **92.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 156 MB | 91 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [深圳数联天下智能科技有限公司](https://appshunter.io/developer/1694637742) | [冬魁 岳](https://appshunter.io/developer/950911287) |

## What reviewers say

### 海豚睡眠

[App page](https://appshunter.io/ios/app/plus/id1282950152)

This app offers a variety of sleep aids, including white noise, guided meditations, and sleep-inducing music. It also provides structured programs to help users develop better sleep habits and offers a community feature for sharing thoughts. The app aims to reduce stress and improve overall sleep quality.

**Highlights:** White noise and nature sounds, Guided meditation and sleep courses, 7-day sleep habit formation plan, Sleep reports and health tips, Community 'goodnight' messages, Sleep-themed merchandise store

**Features:** macOS Compatibility

**In-app purchases:** none


### Lull

[App page](https://appshunter.io/ios/app/lull-white-noise-for-sleep/id1500423385)

This app provides a wide variety of calming sounds to help users and babies fall asleep faster. It masks distracting noises, reduces stress, and can soothe headaches. Features include a timer, relax mode, and an audio mixer to customize sound combinations.

**Highlights:** Wide variety of sleep sounds, Calms fussy and crying babies, Masks distracting noises, Relax Mode for stress reduction, Customizable audio mixer, Sleep timer

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $14.99 | per year |
| VIP Lifetime | $6.99 | one-time |

**What reviewers like**

- 👍 Helps with sleep and relaxation
- 🚀 Wide variety of sounds and customization options
- 💤 Effective for babies and children
- 🎨 Ability to create personalized sound mixes
- ⏱️ Useful timer feature

**What reviewers complain about**

- 🔍 Some sounds locked behind paywall
- 🔊 Disruptive ads in free version
- 🔋 App stops playing when phone is locked or app is closed
- 🐛 Occasional crashes and bugs

**Reported bugs**

- App crashes when accessing saved mixes
- Sound cuts out when ads play
- Inconsistent performance on older devices

**Requested features**

- More calming and soothing sound options
- Lullaby sounds for babies
- Ability to continue playing in background when app is closed
- Improved ad-free experience for paid users


## Frequently asked questions

### Is 海豚睡眠 free?

海豚睡眠 is free to download, with no in-app purchases.

### Is Lull free?

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

### Which has better reviews, 海豚睡眠 or Lull?

Lull is rated higher. 海豚睡眠 averages 3.0 out of 5 from 1 ratings, while Lull averages 4.7 from 735 ratings.

### Do 海豚睡眠 or Lull have ads?

Lull shows ads; 海豚睡眠 does not.

### Which is updated more often, 海豚睡眠 or Lull?

海豚睡眠 ships an update every 2 months, and Lull every 6 weeks. Most recently, 海豚睡眠 was updated on November 3, 2026 and Lull on November 6, 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.*