Comparison

私信 vs MosApp

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

私信

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
Read full description

「 SeChat 私信 」,由鳳凰互聯網團隊2018年全新發佈,是一款基於端對端加密技術的IM(即時通訊)應用,是利用多種高強度加密協議和算法專為應對互聯網移動辦公的網絡威脅,保證商業,金融,高新科技等溝通數據安全而打造的,以專注為廣大企業用戶,政府機構,科研院校,行業協會等團體提供安全可靠的即時通訊服務。SeChat支持文本,表情,語音,圖片等主流IM的聊天功能,同時也為數據安全提供各種數據保護和數據清除的專業功能。 「SeChat免費版」,實行永久全免費政策。同時,「SeChat企業版」会提供更加專業的企業級服務及技術支持,更可提供符合商業客戶需求的二次開發服務。SeChat企業版更可為客戶提供私有化服務器部署,無論是本地服務器還是雲端客戶的全部信息和數據由客戶內部自主管理,一站式專業服務,及時快速上線。 主要功能: -團體管理 -即時通告 -團體活動 -決策投票 -即時通訊服務 -端對端加密 -好友管理 -自主建群 -定時銷毀 -遠程銷毀 (開發中) -閱後即焚 (開發中) -消息撤回 -消息免打擾 -公告服務 -群內互動 -商務功能:雲端任務管理系統 「SeChat」所有版本均基於我們的《使用條款》及《隱私政策》的保障範圍之內。

About

MosApp

This app offers secure, end-to-end encrypted messaging and calls with advanced features like disappearing messages, auto-translation, and AI assistants. It also integrates mini-programs for payments, bookings, and more, all within a customizable interface.

Highlights
  • End-to-end encrypted chats and calls
  • Disappearing messages and two-way deletion
  • Large group chats and public channels
  • In-chat auto-translation
  • AI agent and customer service
  • Integrated mini-programs for payments and bookings
  • App lock with biometrics
Features
Read full description

MosApp – Secure. Smart. All‑in‑one. End‑to‑End Encryption Protect every one‑on‑one chat, group chat, audio, and video call with robust double‑ratchet E2EE. Messages are private, ephemeral, and secure — unreadable to anyone outside the conversation . Voice & Video Calls Crystal‑clear real‑time calling with no limits — voice or video, one‑on‑one or in groups . Group Chats & Channels Create groups up to 10,000 members. Public and private channels for broadcasting or managing communities . Burn After Reading & Two‑Way Deletion Ghost your messages: they can disappear after reading, and both sender and receiver can delete content for everyone . Read Receipts & App Lock Know when messages are read and protect your chats behind an app‑lock (PIN, passcode, or biometrics) . Auto‑Translation Seamlessly translate messages in‑chat — perfect for connecting across languages . AI Agent & Customer Service Train your personal AI assistant to manage tasks, and set up AI‑powered customer support with private knowledge bases and message automation . Mini‑Programs & E‑Wallet Book hotels and flights, pay bills, recharge mobile credits, manage crypto, and enjoy mini‑apps — all within chat . Stickers, GIFs & Themes Express yourself with animated stickers, rich emoji reactions, and customizable chat themes . Cross‑Platform & Instant Messaging Use MosApp enjoy fast, real‑time, multimedia messaging without SMS/MMS fees. Supports over a dozen common languages English, Chinese, Japanese, Korean, Khmer, Vietnamese, Thai, Malay, and more. Why MosApp? - Privacy‑First: No external storage of conversations — true user privacy guaranteed . - All‑in‑One Convenience: Chat, call, pay, book, and manage tasks — no need to switch apps. - Scalable & Powerful: Handles huge groups, public broadcast channels, AI bots — ideal for social and business use. - Complete Customization: Bring any feature you can imagine to life. Simply integrate your creations as mini-apps into our platform to build the experience you want and operate your product, your way. User License Agreemen (EULA) : https://www.apple.com.cn/legal/internet-services/itunes/cn/terms.html Most of the functions of MosApp are permanently free to use, and users can use them normally without paying. Only a few advanced functions are limited to paid members, and they are also free for a limited time. MosApp Subscription/Renewal Guide The MosApp Premium features are currently free for a limited time. Charges will apply later based on the following pricing standards. 1. Subscription Options: Continuous Monthly Package (1 Month), Continuous Quarterly Package (3 Months), Continuous Yearly Package (12 Months), Monthly Package (1 Month), Quarterly Package (3 Months), Yearly Package (12 Months) 2. Prices: - Continuous: $2.49/month, $5.99/quarter, $19.99/year - Standard: $2.99/month, $7.99/quarter, $24.99/year 3. Payment: Charged to iTunes account upon purchase. 4. Renewal: For users who have subscribed to the continuous monthly/continuous quarterly/continuous annual package, subscriptions auto-renew will be charged within 24 hours before the expiration date. After the deduction, the subscription period will be extended by one subscription period 5. Cancellation: The cancellation is required to manually disable auto-renew in iTunes/Apple ID settings at least 24 hours before expiration. Privacy Policy:http://mosapp.app/en/privacy-policy User Service Agreement:http://mosapp.app/en/user-term-service Auto Renewal Service Agreement:http://mosapp.app/en/vip-continuous MosApp VIP Service Agreement:http://mosapp.app/en/vip-service

Screenshots

私信4 screens
MosApp4 screens

Verdict

The call

The clearest difference is review sentiment: 私信 at 100% against MosApp's 50%. 私信 also leads on in-app purchases (none vs 6) and rating (5.0 vs 4.7). MosApp's advantage is ratings volume (3 vs 1). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MosApp sells 6 in-app purchases, starting at $2.49 per month. 私信 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

私信 holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 100% of 私信's written reviews are positive against 50% of MosApp's.

UpkeepUpdate frequency

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

Scorecard6 real differences · 4 level
私信 versus MosApp: the parameters behind the verdict, then further details
Parameter私信MosApp
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (3 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings13 — better
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.5
Further details — not scored
Size17 MB268 MB
Age rating4+17+
Developer香港鳳凰互聯網科技有限公司HIGHLANDER TECHNOLOGIES PTE.LTD.

Customer experience

私信

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

MosApp

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

私信

No in-app purchases

6 purchases

MosApp

Subscriptions3
  • Premium auto renewal monthly$2.491 Month
  • Premium auto renewal quarterly$5.993 Months
  • Premium auto renewal yearly$19.991 Year
One-time3
  • MosApp Premium per month$2.99
  • MosApp Premium per quarter$7.99
  • MosApp Premium per year$24.99

Questions

Is 私信 free?
私信 is free to download, with no in-app purchases.
Is MosApp free?
MosApp is free to download, with in-app purchases available.
Which has better reviews, 私信 or MosApp?
私信 is rated higher. 私信 averages 5.0 out of 5 from 1 ratings, while MosApp averages 4.7 from 3 ratings.
Do 私信 or MosApp have ads?
Neither 私信 nor MosApp shows ads.
Which is updated more often, 私信 or MosApp?
私信 ships an update every 3 weeks, and MosApp fortnightly. Most recently, 私信 was updated on September 26, 2026 and MosApp on October 6, 2026.

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