# 三信通 vs 三秒证件照

The clearest difference is in-app purchases: 三信通 at none against 三秒证件照's 2. 三信通 also leads on device support and iOS requirement (12.0 vs 16.0). On price there is nothing between them.

Both are free to download. 三秒证件照 sells 2 in-app purchases, starting at $2.99 per 7 days. 三信通 asks for nothing beyond the download.

## The numbers

| Metric | 三信通 | 三秒证件照 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 4 days | — |
| Size | 8 MB | 5 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [祝 彭](https://appshunter.io/developer/1289116262) | [琦 马](https://appshunter.io/developer/1543007311) |

## What reviewers say

### 三信通

[App page](https://appshunter.io/ios/app/id6445873540)

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

**In-app purchases:** none


### 三秒证件照

[App page](https://appshunter.io/ios/app/id6748446989)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 三秒高清证件照 专业版 | $2.99 | per 7 days |
| 终身高级版 | $3.99 | one-time |


## Frequently asked questions

### Is 三信通 free?

三信通 is free to download, with no in-app purchases.

### Is 三秒证件照 free?

三秒证件照 is free to download, with in-app purchases available.

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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.*