# 石化招采 vs 慧智签

The clearest difference is update cadence: 慧智签 at every 3 weeks against 石化招采's every 2 months. 石化招采's advantage is iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

石化招采 ships an update every 2 months, 慧智签 every 3 weeks. The most recent releases landed on September 15, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | 石化招采 | 慧智签 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 95 MB | 55 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [China Petrochemical Corporation](https://appshunter.io/developer/1404188289) | [Beijing Zhike Xingyun Digital Technology Co., Ltd.](https://appshunter.io/developer/1687040758) |

## What reviewers say

### 石化招采

[App page](https://appshunter.io/ios/app/id6444849755)

**Features:** macOS Compatibility

**In-app purchases:** none


### 慧智签

[App page](https://appshunter.io/ios/app/id6470641586)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 石化招采 free?

石化招采 is free to download, with no in-app purchases.

### Is 慧智签 free?

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

### Do 石化招采 or 慧智签 have ads?

Neither 石化招采 nor 慧智签 shows ads.

### Which is updated more often, 石化招采 or 慧智签?

石化招采 ships an update every 2 months, and 慧智签 every 3 weeks. Most recently, 石化招采 was updated on September 15, 2026 and 慧智签 on September 16, 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.*