# 倒数日 · Days Matter vs 智建云智算

The clearest difference is in-app purchases: 智建云智算 at none against 倒数日 · Days Matter's 10. 智建云智算 also leads on ads (none vs shown). 倒数日 · Days Matter's advantage is device support (4 vs 2). On price, review sentiment, update cadence and iOS requirement there is nothing between them.

Both are free to download. 倒数日 · Days Matter sells 10 in-app purchases, starting at $0.49 per month. 智建云智算 asks for nothing beyond the download.

倒数日 · Days Matter ships an update every 3 weeks, 智建云智算 every 5 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 倒数日 · Days Matter | 智建云智算 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8.3K ratings)](https://appshunter.io/ios/app/days-matter/id406170251/reviews)** | — |
| Number of ratings | **8.3K** | — |
| Positive reviews | **87.5% of reviews** | 85.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 280 MB | 73 MB |
| Requires iOS | **15.0** | 16 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iDaily Corp.](https://appshunter.io/developer/364264742) | [广州趣说网络科技有限公司](https://appshunter.io/developer/1755413844) |

## What reviewers say

### 倒数日 · Days Matter

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

Track important dates, from personal milestones to financial deadlines. Offers extensive date range support, cloud sync, and customizable event backgrounds. Includes features like historical date lookups and a date calculator.

**Highlights:** Extensive date range support (year 1 to 9999), Cloud synchronization for data backup, Lunar calendar support, Notification Center widgets and Apple Watch app, Customizable event backgrounds, Password protection with Face ID/Touch ID

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

**In-app purchases (10)**

| 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 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


### 智建云智算

[App page](https://appshunter.io/ios/app/id6752017480)

**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 智建云智算 free?

智建云智算 is free to download, with no in-app purchases.

### Do 倒数日 · Days Matter or 智建云智算 have ads?

倒数日 · Days Matter shows ads; 智建云智算 does not.

### Which is updated more often, 倒数日 · Days Matter or 智建云智算?

倒数日 · Days Matter ships an update every 3 weeks, and 智建云智算 every 5 weeks. Most recently, 倒数日 · Days Matter was updated on November 6, 2026 and 智建云智算 on October 30, 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.*