# 倒数日 · Days Matter vs 眼力测试

The clearest difference is rating: 倒数日 · Days Matter at 4.8 against 眼力测试's 1.0. 倒数日 · Days Matter also leads on ratings volume (8.3K vs 1). 眼力测试's advantage is in-app purchases (none vs 11) and iOS requirement (13.0 vs 15.0). On price, update cadence, ads 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. 眼力测试 asks for nothing beyond the download.

倒数日 · Days Matter holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: 倒数日 · Days Matter has 8.3K ratings behind it against 1, so its average is the more settled of the two.

倒数日 · Days Matter ships an update monthly, 眼力测试 every 6 weeks. The most recent releases landed on November 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 倒数日 · Days Matter | 眼力测试 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8.3K ratings)](https://appshunter.io/ios/app/days-matter/id406170251/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/id6739488457/reviews) |
| Number of ratings | **8.3K** | 1 |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 263 MB | 68 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iDaily Corp.](https://appshunter.io/developer/364264742) | [Render Apps](https://appshunter.io/developer/1614413964) |

## 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


### 眼力测试

[App page](https://appshunter.io/ios/app/id6739488457)

This app uses digital images to test your vision and color perception. It helps identify color blindness and assess your sensitivity to numbers, actively engaging your brain and eyes. The simple interface requires you to enter the correct numbers into designated fields.

**Highlights:** Color blindness and weakness testing, Number sensitivity assessment, Brain and eye exercise, Color blindness type identification, Simple number input interface

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

**In-app purchases:** none


## 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 眼力测试 free?

眼力测试 is free to download, with no in-app purchases.

### Which has better reviews, 倒数日 · Days Matter or 眼力测试?

倒数日 · Days Matter is rated higher. 倒数日 · Days Matter averages 4.8 out of 5 from 8.3K ratings, while 眼力测试 averages 1.0 from 1 ratings.

### Do 倒数日 · Days Matter or 眼力测试 have ads?

Both 倒数日 · Days Matter and 眼力测试 show ads.

### Which is updated more often, 倒数日 · Days Matter or 眼力测试?

倒数日 · Days Matter ships an update monthly, and 眼力测试 every 6 weeks. Most recently, 倒数日 · Days Matter was updated on November 3, 2026 and 眼力测试 on October 8, 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.*