聚福学堂 vs Cerberus

聚福学堂，让熟悉的人在一方清爽、安静的空间里保持联系。 无论是一句问候、一张照片，还是一次语音或视频通话，聚福学堂都希望让沟通更自然，让彼此的消息及时抵达。 【好友与群组】 • 通过聚福学堂号或手机号查找用户 • 发送和处理好友申请，建立自己的联系列表 • 创建群组，与多位好友共同交流 • 管理群成员、群资料和群聊设置 • 通过扫一扫快速识别用户或群组 【丰富的消息方式】 • 发送文字、图片、语音和视频消息 • 发送文件，满足不同内容的交流需要 • 查看消息发送、接收和已读状态 • 管理会话列表和未读消息 • 在私聊与群聊之间清晰切换 【语音与视频通话】 • 与好友发起语音通话 • 通过视频通话进行面对面交流 • 清晰展示呼叫、接听和通话状态 • 根据当前网络状态建立实时连接 【及时的消息提醒】 • App不在前台时接收离线消息通知 • 自主管理新消息通知和消息预览 • 根据需要调整声音、振动和应用内静音设置 • 及时了解好友消息和通话提醒 【个性化使用体验】 • 自定义聊天背景 • 支持普通模式、深色模式和跟随系统 • 提供简体中文与英文界面选择 • 清理缓存，管理设备存储空间 【隐私与账号管理】 • 自主管理手机号和聚福学堂号搜索方式 • 提供黑名单和登录设备管理 • 支持聊天密码与屏保锁定 • 本地聊天数据采用加密存储 • 可随时管理相机、相册、麦克风和通知权限 • 支持在App内申请永久注销账号 聚福学堂以自然、清爽的交流体验为出发点，让每一条消息都有回应，让每一次相知都值得珍惜。

Cerberus is a messenger for conversations that are nobody else's business. Every message, voice note and file is encrypted on your phone and opened only on the phone of the person you are talking to. The server in between carries sealed data and holds no key to any of it — not as a promise not to look, but as a matter of what it has. NO ACCOUNT, NO PHONE NUMBER, NO DIRECTORY There is nothing to sign up for: no email, no SMS, no profile, no password. Nobody can look you up and nobody can add you. A conversation begins when two people are in the same room and one of them scans a code from the other's screen. That is the only way in, and it is the point. WHAT IT PROTECTS • End-to-end encryption with standard cryptography. Keys are generated on the device and stored in the Keychain — they never travel. • The code you show is good once and for a few minutes. The two phones shake hands and move the conversation to a key that was never on any screen, so a code somebody photographed is worth nothing. • A PIN or Face ID on the app itself. • A second PIN for the situation nobody plans for: enter it and the app opens with every conversation hidden, or erases what is on the device, whichever you chose. It shows no error and no sign that another code exists. • Screenshots do not pass silently: the other side is told. • Messages delete themselves on a schedule you set — on both devices and on the server. • A chat list that can show names only, for the moments when your screen is not only yours. AND IT IS STILL A MESSENGER Swipe a message to reply, hold one to react, send photos, videos, files and voice notes, delete anything on your phone or on both phones at once. Everything is where you expect it to be. FREE, AND PRO Two conversations, messages and reactions are free forever — a working messenger, not a trial. Pro adds unlimited conversations, voice notes, photos and files, and deleting on both phones. Take it monthly or yearly with a 3-day free trial, or pay once and keep it for good. Whatever Pro gains later is included at no extra cost. Subscriptions renew automatically until you cancel them in your Apple ID settings. Terms of Use: https://zero-relay.fly.dev/terms WHAT WE CANNOT DO We cannot read your messages, recover them, or reset anything for you. Delete the app and every conversation goes with it: there is no backup, by design, and no way back. To destroy the keys as well, erase from inside the app first — Settings, Security, "Erase everything now". That is the trade this app makes, and it is written here rather than buried in a settings screen.