# 倒数日 · Days Matter vs 暗礁助手

The clearest difference is review sentiment: 倒数日 · Days Matter at 87% against 暗礁助手's 43%. 倒数日 · Days Matter also leads on ratings volume (8.2K vs 1) and iOS requirement (15.0 vs 17.0). 暗礁助手's advantage is ads (none vs shown) and rating (5.0 vs 4.8). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 倒数日 · Days Matter sells 11 in-app purchases, starting at $0.49 per month and 暗礁助手 sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

暗礁助手 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: 倒数日 · Days Matter has 8.2K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 87% of 倒数日 · Days Matter's written reviews are positive against 43% of 暗礁助手's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 21, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 倒数日 · Days Matter | 暗礁助手 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (8.2K ratings)](https://appshunter.io/ios/app/days-matter/id406170251/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6496372036/reviews)** |
| Number of ratings | **8.2K** | 1 |
| Positive reviews | **87.5% of reviews** | 42.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 263 MB | 28 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [iDaily Corp.](https://appshunter.io/developer/364264742) | [浩源 陈](https://appshunter.io/developer/1665506236) |

## What reviewers say

### 倒数日 · Days Matter

[App page](https://appshunter.io/ios/app/days-matter/id406170251)

This app helps you track important dates, from birthdays and anniversaries to deadlines and personal milestones. It offers extensive date range support, cloud synchronization, and customizable categories to keep your memories and tasks organized. Features include historical date lookups and a built-in calculator.

**Highlights:** Countdown/count up to any date, Cloud synchronization, Lunar calendar support, Customizable categories, Historical dates, Date calculator, Password protection

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 倒数日 Pro · 月度会员 | $0.49 | per month |
| 倒数日相册 1000 张 | $0.99 | per month |
| 倒数日相册 2000 张 | $1.99 | per month |
| 倒数日相册 5000 张 | $3.99 | per month |
| 倒数日相册 10000 张 | $6.99 | per month |
| 倒数日重置密码 | $0.99 | one-time |
| メールアドレスカード | $2.99 | one-time |
| 咖啡 | $2.99 | one-time |
| Days Matter Pro | $4.99 | one-time |
| 银币 | $5.99 | one-time |
| 金币 | $14.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 📆 Helps remember important dates
- 🗓️ Useful for tracking events and milestones
- 🧠 Aids in recalling memories
- 🔍 Provides historical information

**What reviewers complain about**

- 💰 Some features require paid subscription
- 🌐 Lack of English language support
- 🔧 Occasional bugs and crashes
- 🔍 Cluttered interface for some users
- ⚠️ Unexpected changes to login/sync methods

**Reported bugs**

- Incorrect date display in widget
- Inconsistent behavior when changing phones
- Sync issues causing data loss
- Unexpected app behavior after updates

**Requested features**

- Add English language option
- Improve widget customization
- Provide more theme/background options
- Allow manual date entry format customization
- Implement sync with other calendar apps


### 暗礁助手

[App page](https://appshunter.io/ios/app/id6496372036)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 暗礁助手 Pro | $0.99 | per month |
| 暗礁助手 Max | $0.99 | per month |
| 暗礁助手 Ultra | $2.99 | per month |


## Frequently asked questions

### Is 倒数日 · Days Matter free?

倒数日 · Days Matter is free to download, with in-app purchases available.

### Is 暗礁助手 free?

暗礁助手 is free to download, with in-app purchases available.

### Which has better reviews, 倒数日 · Days Matter or 暗礁助手?

暗礁助手 is rated higher. 倒数日 · Days Matter averages 4.8 out of 5 from 8.2K ratings, while 暗礁助手 averages 5.0 from 1 ratings.

### Do 倒数日 · Days Matter or 暗礁助手 have ads?

倒数日 · Days Matter shows ads; 暗礁助手 does not.

### Which is updated more often, 倒数日 · Days Matter or 暗礁助手?

倒数日 · Days Matter ships an update monthly, and 暗礁助手 monthly. Most recently, 倒数日 · Days Matter was updated on October 21, 2026 and 暗礁助手 on September 27, 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.*