# 私信 vs 观涛云信

The clearest difference is iOS requirement: 私信 at 13.0 against 观涛云信's 15.5. On price, update cadence, ads and in-app purchases there is nothing between them.

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

私信 ships an update every 3 weeks, 观涛云信 fortnightly. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 私信 | 观涛云信 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sechat/id1378942732/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 17 MB | 156 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [香港鳳凰互聯網科技有限公司](https://appshunter.io/developer/1238227716) | [安徽观涛软件科技集团有限公司](https://appshunter.io/developer/1708542342) |

## What reviewers say

### 私信

[App page](https://appshunter.io/ios/app/sechat/id1378942732)

A secure instant messaging app built with end-to-end encryption for businesses and organizations. It offers standard chat features along with advanced data protection and clearing functions. A free version is available, with a paid enterprise option for enhanced services.

**Highlights:** End-to-end encryption, Text, emoji, voice, and image chat, Data protection and clearing, Group management, Instant announcements, Message recall and do not disturb

**In-app purchases:** none


### 观涛云信

[App page](https://appshunter.io/ios/app/id6480368441)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 私信 free?

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

### Is 观涛云信 free?

观涛云信 is free to download, with no in-app purchases.

### Do 私信 or 观涛云信 have ads?

Neither 私信 nor 观涛云信 shows ads.

### Which is updated more often, 私信 or 观涛云信?

私信 ships an update every 3 weeks, and 观涛云信 fortnightly. Most recently, 私信 was updated on September 26, 2026 and 观涛云信 on September 30, 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.*