# 倒数日 · Days Matter vs 格式转换

The clearest difference is ads: 格式转换 at none against 倒数日 · Days Matter's shown. 格式转换 also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (13.0 vs 15.0). 倒数日 · Days Matter's advantage is device support (4 vs 2). On price, review sentiment, in-app purchases and monetization model 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 and 格式转换 sells 5 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

倒数日 · Days Matter ships an update every 3 weeks, 格式转换 weekly. Both last shipped on November 12, 2026.

## The numbers

| Metric | 倒数日 · Days Matter | 格式转换 |
| --- | --- | --- |
| 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** | 84.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 280 MB | 115 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iDaily Corp.](https://appshunter.io/developer/364264742) | [ZHN Co., Ltd.](https://appshunter.io/developer/1510482803) |

## 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


### 格式转换

[App page](https://appshunter.io/ios/app/id6740067513)

Effortlessly convert, compress, and manage your media files. This tool supports hundreds of video, audio, and image formats, offering intelligent compression without sacrificing quality. Extract audio from videos and easily manage your device's storage.

**Highlights:** Video, audio, and image format conversion, Intelligent compression up to 90%, Audio extraction from videos, Batch processing for over 1000 files, High-quality output with custom settings, Ad-free user experience

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| 周会员 | $2.99 | per 7 days |
| 月度会员 | $3.99 | per month |
| 半年会员 | $7.99 | per 6 months |
| 年度会员 | $14.99 | one-time |


## 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 格式转换 free?

格式转换 is free to download, with in-app purchases available.

### Do 倒数日 · Days Matter or 格式转换 have ads?

倒数日 · Days Matter shows ads; 格式转换 does not.

### Which is updated more often, 倒数日 · Days Matter or 格式转换?

倒数日 · Days Matter ships an update every 3 weeks, and 格式转换 weekly. Most recently, 倒数日 · Days Matter was updated on November 12, 2026 and 格式转换 on November 12, 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.*