# 九信IM vs 云企密信Pro

九信IM and 云企密信Pro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

九信IM ships an update every 2 weeks, 云企密信Pro every 8 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 九信IM | 云企密信Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pro/id6476509633/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | — | Free |
| Size | 58 MB | 106 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [才斌 王](https://appshunter.io/developer/1579169867) | [Shenzhen Aituosi Network Technology Co., Ltd](https://appshunter.io/developer/1726932857) |

## What reviewers say

### 九信IM

[App page](https://appshunter.io/ios/app/im/id1580504125)

**Features:** macOS Compatibility

**In-app purchases:** none


### 云企密信Pro

[App page](https://appshunter.io/ios/app/pro/id6476509633)

This secure messaging app prioritizes user privacy with end-to-end encryption for chats and calls. It offers features like self-destructing messages and files, and supports large group chats for up to 10,000 users.

**Highlights:** End-to-end encryption, Self-destructing messages, Scheduled file destruction, Two-way message deletion, Anti-eavesdropping technology, Large group chats (up to 10,000), Multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 九信IM free?

九信IM is free to download, with no in-app purchases.

### Is 云企密信Pro free?

云企密信Pro is free to download, with no in-app purchases.

### Do 九信IM or 云企密信Pro have ads?

Neither 九信IM nor 云企密信Pro shows ads.

### Which is updated more often, 九信IM or 云企密信Pro?

九信IM ships an update every 2 weeks, and 云企密信Pro every 8 days. Most recently, 九信IM was updated on October 9, 2026 and 云企密信Pro on October 7, 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.*