# 51VV vs 私信

The clearest difference is review sentiment: 私信 at 100% against 51VV's 43%. 私信 also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 6). 51VV's advantage is ratings volume (8 vs 1) and iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 51VV sells 4 one-off in-app purchases. 私信 asks for nothing beyond the download.

私信 holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: 51VV has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 43% of 51VV's written reviews are positive against 100% of 私信's.

51VV ships an update every 3 months, 私信 every 3 weeks. The most recent releases landed on September 15, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 51VV | 私信 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (8 ratings)](https://appshunter.io/ios/app/51vv/id1051602193/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sechat/id1378942732/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 59 MB | 17 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Beijing Youbei Online Network Technology Co., Ltd.](https://appshunter.io/developer/910075996) | [香港鳳凰互聯網科技有限公司](https://appshunter.io/developer/1238227716) |

## What reviewers say

### 51VV

[App page](https://appshunter.io/ios/app/51vv/id1051602193)

This is a live video streaming community app offering real-time communication, karaoke, and video chat. It features various channels for socializing, music, and education, aiming to be an engaging online video entertainment platform.

**Highlights:** Live video streaming, Karaoke and music channels, Video chat with multiple users, Social networking and dating, Room management tools, Multiple login options, Account switching

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3.6万V点 | $0.99 | one-time |
| 10.8万V点 | $2.99 | one-time |
| 18万V点 | $4.99 | one-time |
| 30万V点 | $7.99 | one-time |


### 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


## Frequently asked questions

### Is 51VV free?

51VV is free to download, with in-app purchases available.

### Is 私信 free?

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

### Which has better reviews, 51VV or 私信?

私信 is rated higher. 51VV averages 3.8 out of 5 from 8 ratings, while 私信 averages 5.0 from 1 ratings.

### Do 51VV or 私信 have ads?

Neither 51VV nor 私信 shows ads.

### Which is updated more often, 51VV or 私信?

51VV ships an update every 3 months, and 私信 every 3 weeks. Most recently, 51VV was updated on September 15, 2026 and 私信 on September 9, 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.*