# 私信 vs 默信

The clearest difference is review sentiment: 私信 at 100% against 默信's 17%. 私信 also leads on rating (5.0 vs 2.4) and in-app purchases (none vs 10). 默信's advantage is ratings volume (5 vs 1). On price, update cadence and device support there is nothing between them.

Both are free to download. 默信 sells 10 one-off in-app purchases. 私信 asks for nothing beyond the download.

私信 holds the better App Store score, 5.0 against 2.4. That said, the two scores are not equally well evidenced: 默信 has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of 私信's written reviews are positive against 17% of 默信's.

私信 ships an update every 3 weeks, 默信 fortnightly. The most recent releases landed on September 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 私信 | 默信 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sechat/id1378942732/reviews)** | [2.4 (5 ratings)](https://appshunter.io/ios/app/id1664330276/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | **100.0% of reviews** | 16.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 132 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [香港鳳凰互聯網科技有限公司](https://appshunter.io/developer/1238227716) | [Chengdu Anwei Technology Co., Ltd](https://appshunter.io/developer/1656948139) |

## 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


### 默信

[App page](https://appshunter.io/ios/app/id1664330276)

This secure messaging app offers end-to-end encrypted communication through text, voice, and video calls. Users can set and view personal statuses to stay updated on friends' activities.

**Highlights:** End-to-end encrypted chat, Personal status updates, Text, voice, and video calls, Reliable message delivery, Private and secure communication

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 壁虎气泡装扮购买 | $0.99 | one-time |
| 3月靓号服务 | $4.99 | one-time |
| 50 壁虎币 | $6.99 | one-time |
| 6个月的靓号服务 | $9.99 | one-time |
| 100 壁虎币 | $14.99 | one-time |
| 1年靓号服务 | $19.99 | one-time |
| 208 壁虎币 | $29.99 | one-time |
| 订阅年容量套餐 | $39.99 | one-time |
| 500M收藏容量 | $89.99 | one-time |
| 1024M(1G)的收藏容量套餐 | $149.99 | one-time |


## Frequently asked questions

### Is 私信 free?

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

### Is 默信 free?

默信 is free to download, with in-app purchases available.

### Which has better reviews, 私信 or 默信?

私信 is rated higher. 私信 averages 5.0 out of 5 from 1 ratings, while 默信 averages 2.4 from 5 ratings.

### Do 私信 or 默信 have ads?

默信 shows ads; 私信 does not.

### Which is updated more often, 私信 or 默信?

私信 ships an update every 3 weeks, and 默信 fortnightly. Most recently, 私信 was updated on September 26, 2026 and 默信 on October 27, 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.*