Comparison

Shiku IM vs 私信

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

Head to head
About

Shiku IM

A secure and feature-rich instant messaging application designed for high concurrency and availability. It offers a comprehensive suite of communication tools, including text, voice, and video conferencing, with robust privacy features and private cloud support.

Highlights
  • High concurrency and availability
  • End-to-end encryption
  • Private cloud support
  • Voice and video conferencing
  • Burn after reading messages
  • Group chat up to 10,000 members
  • Shared desktop functionality
Features
Read full description

This is an original instant messaging software with stable performance and features. 1. high concurrency: the measured concurrent number is above 20W, and it supports hundreds of millions of users. 2. high availability: the server does not need to restart for half a year, automatic load balancing. 3. function: mainstream IM has all the functions, and we still have none. 4. private cloud: support for privatization and deep customization, not subject to people. 5. high security: communication protocol adopts high intensity encryption algorithm, and chat records do not leak. 6. Support appointment meeting, voice conference, video conference, shared desktop, text chat in the meeting, member management, etc The specific functions are: 1. address book, supporting friend validation or non verification, two-dimensional code, label grouping, pulling black, my colleagues, public numbers, multiple entry, my phone sending messages to my computer, etc. 2. single chat, support message receipt, burn after reading, display read, message free, top, withdraw, video chat, search chat records, etc. 3. group chat, support bulletin, @ group members, group members, group validation, group nicknames, group management, number of readers, video conferencing, etc., to support 10000 people. 4. message, support long text, pictures, recording, video, business card, location, animation, archives, red packets, screenshots and other types. 5. Privacy, exclusive ownership of features such as delivery, read, burn after reading, end-to-end encryption, private groups, private group members, etc

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。

Screenshots

Shiku IM3 screens
私信4 screens

Verdict

The call

Shiku IM and 私信 are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 12, 2026 and September 26, 2026 respectively.

ScorecardNo meaningful differences
Shiku IM versus 私信: the parameters behind the verdict, then further details
ParameterShiku IM私信
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size181 MB17 MB
Age rating17+4+
DeveloperShenzhen Shiku information technology co., LTD香港鳳凰互聯網科技有限公司

Customer experience

Shiku IM

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

私信

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

In-app purchases

None

Shiku IM

No in-app purchases

None

私信

No in-app purchases

Questions

Is Shiku IM free?
Shiku IM is free to download, with no in-app purchases.
Is 私信 free?
私信 is free to download, with no in-app purchases.
Which has better reviews, Shiku IM or 私信?
Shiku IM and 私信 are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Shiku IM or 私信 have ads?
Neither Shiku IM nor 私信 shows ads.
Which is updated more often, Shiku IM or 私信?
Shiku IM ships an update every 3 weeks, and 私信 every 3 weeks. Most recently, Shiku IM was updated on October 12, 2026 and 私信 on September 26, 2026.

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