# yiya vs 七元煤业工程宝

The clearest difference is iOS requirement: 七元煤业工程宝 at 9.0 against yiya's 11.0. 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.

yiya ships an update every 2 days, 七元煤业工程宝 daily. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | yiya | 七元煤业工程宝 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Size | 14 MB | 81 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shanghai Hasagei Network Technology Co., Ltd](https://appshunter.io/developer/1627004610) | [磊 徐](https://appshunter.io/developer/1550221944) |

## What reviewers say

### yiya

[App page](https://appshunter.io/ios/app/yiya/id1627004608)

**Features:** macOS Compatibility

**In-app purchases:** none


### 七元煤业工程宝

[App page](https://appshunter.io/ios/app/id6470788005)

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

**In-app purchases:** none


## Frequently asked questions

### Is yiya free?

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

### Is 七元煤业工程宝 free?

七元煤业工程宝 is free to download, with no in-app purchases.

### Do yiya or 七元煤业工程宝 have ads?

Neither yiya nor 七元煤业工程宝 shows ads.

### Which is updated more often, yiya or 七元煤业工程宝?

yiya ships an update every 2 days, and 七元煤业工程宝 daily. Most recently, yiya was updated on October 7, 2026 and 七元煤业工程宝 on October 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.*