# 专注时钟 vs 习惯岛

The clearest difference is in-app purchases: 专注时钟 at none against 习惯岛's 11. 专注时钟 also leads on ratings volume (67 vs 4) and iOS requirement (13.0 vs 15.0). 习惯岛's advantage is rating (5.0 vs 4.6). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. 习惯岛 sells 11 one-off in-app purchases. 专注时钟 asks for nothing beyond the download.

习惯岛 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: 专注时钟 has 67 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 97% of 专注时钟's written reviews are positive against 100% of 习惯岛's.

专注时钟 ships an update every 3 weeks, 习惯岛 every 5 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 专注时钟 | 习惯岛 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (67 ratings)](https://appshunter.io/ios/app/id1495041057/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/id1673628986/reviews)** |
| Number of ratings | **67** | 4 |
| Positive reviews | 97.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 110 MB | 21 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [飞剑 姚](https://appshunter.io/developer/1113334129) | [广博 郝](https://appshunter.io/developer/1173506771) |

## What reviewers say

### 专注时钟

[App page](https://appshunter.io/ios/app/id1495041057)

Enhance focus and productivity with a customizable digital clock, countdown timer, and a variety of white noise soundscapes. Designed to help you enter work or study states faster and more efficiently.

**Highlights:** Full screen digital clock, Countdown timer, Customizable UI styles, Variety of white noise background sounds, Firecrackers & Fireworks animation (New Year's theme)

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

**In-app purchases:** none


### 习惯岛

[App page](https://appshunter.io/ios/app/id1673628986)

This app gamifies habit tracking by allowing users to create custom habit cards and earn in-game currency and experience. Use your rewards to decorate your personal island, unlock new items, and progress through levels. It aims to make habit formation more engaging and rewarding.

**Highlights:** Gamified habit tracking, Customizable habit cards, Island decoration and expansion, In-game currency and experience rewards, Cloud synchronization, Statistical charts, Weekly bonus chests

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLUS 计划（1 个月） | $0.99 | one-time |
| PLUS 计划（6 个月） | $2.99 | one-time |
| PLUS 计划（1 年） | $3.99 | one-time |
| PLUS 计划（6 个月） | $3.99 | one-time |
| PLUS 计划（6 个月） | $4.99 | one-time |
| PLUS 计划（1 年） | $4.99 | one-time |
| PLUS 计划（1 年） | $6.99 | one-time |
| PLUS 计划（1 年） | $7.99 | one-time |
| PLUS 计划（终身） | $9.99 | one-time |
| PLUS 计划（终身） | $12.99 | one-time |
| PLUS 计划（终身） | $19.99 | one-time |


## Frequently asked questions

### Is 专注时钟 free?

专注时钟 is free to download, with no in-app purchases.

### Is 习惯岛 free?

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

### Which has better reviews, 专注时钟 or 习惯岛?

习惯岛 is rated higher. 专注时钟 averages 4.6 out of 5 from 67 ratings, while 习惯岛 averages 5.0 from 4 ratings.

### Do 专注时钟 or 习惯岛 have ads?

Neither 专注时钟 nor 习惯岛 shows ads.

### Which is updated more often, 专注时钟 or 习惯岛?

专注时钟 ships an update every 3 weeks, and 习惯岛 every 5 weeks. Most recently, 专注时钟 was updated on October 26, 2026 and 习惯岛 on October 24, 2026.

---

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