# 密九通 vs 信通卫士

The clearest difference is update cadence: 信通卫士 at every 2 months against 密九通's every 11 months. 密九通's advantage is iOS requirement (10.0 vs 15). 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.

密九通 ships an update every 11 months, 信通卫士 every 2 months. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 密九通 | 信通卫士 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6467718270/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Size | 91 MB | 322 MB |
| Requires iOS | **10.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ShenZhen AoLian Information Security Technology Co.,Ltd.](https://appshunter.io/developer/1580917948) | [China Academy of Telecommunication Research of MIIT](https://appshunter.io/developer/918420891) |

## What reviewers say

### 密九通

[App page](https://appshunter.io/ios/app/id1641821775)

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

**In-app purchases:** none


### 信通卫士

[App page](https://appshunter.io/ios/app/id6467718270)

**In-app purchases:** none


## Frequently asked questions

### Is 密九通 free?

密九通 is free to download, with no in-app purchases.

### Is 信通卫士 free?

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

### Do 密九通 or 信通卫士 have ads?

Neither 密九通 nor 信通卫士 shows ads.

### Which is updated more often, 密九通 or 信通卫士?

密九通 ships an update every 11 months, and 信通卫士 every 2 months. Most recently, 密九通 was updated on October 1, 2026 and 信通卫士 on October 13, 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.*