# 私信 vs 航天MOA

The clearest difference is update cadence: 私信 at every 3 weeks against 航天MOA's every 3 months. 航天MOA's advantage is iOS requirement (11.0 vs 13.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for 私信 against 5.0 for 航天MOA. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

私信 ships an update every 3 weeks, 航天MOA every 3 months. The most recent releases landed on September 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 私信 | 航天MOA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sechat/id1378942732/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/moa/id1436947028/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 17 MB | 623 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [香港鳳凰互聯網科技有限公司](https://appshunter.io/developer/1238227716) | [航天云网科技发展有限责任公司](https://appshunter.io/developer/1055408308) |

## 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


### 航天MOA

[App page](https://appshunter.io/ios/app/moa/id1436947028)

This app offers a familiar communication experience for efficient work collaboration. It connects headquarters with national branches for unified management and standardizes employee work through its system. Enjoy real-time message synchronization across devices and clear read/unread status for effective communication.

**Highlights:** Familiar communication interface, Real-time message synchronization, Cloud message storage, Read/unread message status, Unified contact management

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is 私信 free?

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

### Is 航天MOA free?

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

### Which has better reviews, 私信 or 航天MOA?

私信 and 航天MOA are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 私信 or 航天MOA have ads?

Neither 私信 nor 航天MOA shows ads.

### Which is updated more often, 私信 or 航天MOA?

私信 ships an update every 3 weeks, and 航天MOA every 3 months. Most recently, 私信 was updated on September 26, 2026 and 航天MOA on October 6, 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.*