# 数据同步助手 vs YonderClock

The clearest difference is in-app purchases: 数据同步助手 at none against YonderClock's 2. YonderClock's advantage is update cadence (daily vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. YonderClock sells 2 in-app purchases, starting at $9.99 per year. 数据同步助手 asks for nothing beyond the download.

数据同步助手 ships an update every 2 months, YonderClock daily. The most recent releases landed on October 1, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 数据同步助手 | YonderClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/yonderclock/id6762817899/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | — | Freemium |
| Size | 4 MB | 106 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [深圳市云图数字科技有限公司](https://appshunter.io/developer/1485545970) | [Guangzhou Black Box Network Technology Co., Ltd.](https://appshunter.io/developer/1526609856) |

## What reviewers say

### 数据同步助手

[App page](https://appshunter.io/ios/app/id6759816841)

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

**In-app purchases:** none


### YonderClock

[App page](https://appshunter.io/ios/app/yonderclock/id6762817899)

Experience a dynamic view of the world's time zones through real-time 3D aerial perspectives of global landmarks. Watch as the scene changes every 15 minutes, showcasing morning, noon, or dusk across different cities. Collect visited landmarks and see your progress on a world map.

**Highlights:** Real-time 3D aerial views of landmarks, Dynamic scene changes every 15 minutes, Collection of visited landmarks, World map progress tracking, Home screen widget, Unlimited landmark shuffling (PRO)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Year-Pro | $9.99 | per year |
| Buyout-PRO | $16.49 | one-time |


## Frequently asked questions

### Is 数据同步助手 free?

数据同步助手 is free to download, with no in-app purchases.

### Is YonderClock free?

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

### Do 数据同步助手 or YonderClock have ads?

Neither 数据同步助手 nor YonderClock shows ads.

### Which is updated more often, 数据同步助手 or YonderClock?

数据同步助手 ships an update every 2 months, and YonderClock daily. Most recently, 数据同步助手 was updated on October 1, 2026 and YonderClock 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.*