# 华天成 vs 百事通 (Voo)

The clearest difference is iOS requirement: 华天成 at 9.0 against 百事通 (Voo)'s 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

华天成 ships an update every 10 days, 百事通 (Voo) weekly. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 华天成 | 百事通 (Voo) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Size | 152 MB | 152 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CIB Solar Co., Ltd.](https://appshunter.io/developer/1038827198) | [Voo Dev LLC](https://appshunter.io/developer/1788147521) |

## What reviewers say

### 华天成

[App page](https://appshunter.io/ios/app/id1471489331)

**Features:** macOS Compatibility

**In-app purchases:** none


### 百事通 (Voo)

[App page](https://appshunter.io/ios/app/voo/id6747854851)

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

**In-app purchases:** none


## Frequently asked questions

### Is 华天成 free?

华天成 is free to download, with no in-app purchases.

### Is 百事通 (Voo) free?

百事通 (Voo) is free to download, with no in-app purchases.

### Do 华天成 or 百事通 (Voo) have ads?

Neither 华天成 nor 百事通 (Voo) shows ads.

### Which is updated more often, 华天成 or 百事通 (Voo)?

华天成 ships an update every 10 days, and 百事通 (Voo) weekly. Most recently, 华天成 was updated on October 19, 2026 and 百事通 (Voo) on October 11, 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.*