# 九信IM vs 量子密信APP

The clearest difference is update cadence: 九信IM at every 2 weeks against 量子密信APP's monthly. 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.

九信IM ships an update every 2 weeks, 量子密信APP monthly. Both last shipped on September 22, 2026.

## The numbers

| Metric | 九信IM | 量子密信APP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (12 ratings)](https://appshunter.io/ios/app/app/id1664316507/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 11.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | — | Free |
| Size | 58 MB | 297 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) | [中电信量子科技有限公司](https://appshunter.io/developer/1664316509) |

## What reviewers say

### 九信IM

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 量子密信APP

[App page](https://appshunter.io/ios/app/app/id1664316507)

This enterprise communication and collaboration app facilitates instant messaging, contact management, and meeting coordination. It enhances internal communication and management efficiency for businesses, with built-in security features like watermarking and sensitive word filters.

**Highlights:** Instant messaging, Unit contact directory, Meeting management, Announcement and information, Enterprise-level security, Global watermarking, Sensitive word settings

**Features:** Vision Pro support

**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 量子密信APP free?

量子密信APP is free to download, with no in-app purchases.

### Do 九信IM or 量子密信APP have ads?

Neither 九信IM nor 量子密信APP shows ads.

### Which is updated more often, 九信IM or 量子密信APP?

九信IM ships an update every 2 weeks, and 量子密信APP monthly. Most recently, 九信IM was updated on September 22, 2026 and 量子密信APP on September 22, 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.*