# 海豚睡眠 vs LastTimer

The clearest difference is review sentiment: LastTimer at 100% against 海豚睡眠's 0%. LastTimer also leads on rating (5.0 vs 3.0) and update cadence (every 3 weeks vs every 2 months). 海豚睡眠's advantage is price (Free vs $0.99) and iOS requirement (9.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

海豚睡眠 is free to download; LastTimer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LastTimer holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: LastTimer has 11 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 100% of LastTimer's.

海豚睡眠 ships an update every 2 months, LastTimer every 3 weeks. The most recent releases landed on June 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 海豚睡眠 | LastTimer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/plus/id1282950152/reviews) | **[5.0 (11 ratings)](https://appshunter.io/ios/app/lasttimer/id1571153200/reviews)** |
| Number of ratings | 1 | **11** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 156 MB | 4 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Data Thinking Technology Co.,Ltd.](https://appshunter.io/developer/1694637742) | [Matthew weppler](https://appshunter.io/developer/1300055906) |

## 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


### LastTimer

[App page](https://appshunter.io/ios/app/lasttimer/id1571153200)

This interval timer app helps you maximize workout efficiency by guiding your training sessions. Create custom timers with prep time, exercise intervals, rest periods, and audio cues. Track progress visually with widgets and live activities.

**Highlights:** Customizable interval timers, Prep time and rest periods, Multiple exercises per cycle, Up to 10 cycles per workout, Audio cues, Home screen widgets, Live Activities integration

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

**In-app purchases:** none


## Frequently asked questions

### Is 海豚睡眠 free?

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

### Is LastTimer free?

LastTimer costs $0.99, with no in-app purchases.

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

LastTimer is rated higher. 海豚睡眠 averages 3.0 out of 5 from 1 ratings, while LastTimer averages 5.0 from 11 ratings.

### Do 海豚睡眠 or LastTimer have ads?

Neither 海豚睡眠 nor LastTimer shows ads.

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

海豚睡眠 ships an update every 2 months, and LastTimer every 3 weeks. Most recently, 海豚睡眠 was updated on June 9, 2026 and LastTimer on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*