Messenger vs SimpleX Chat

Messenger is Meta’s free messaging app for chatting and calling friends and family on Facebook and Messenger without needing a phone number. It is available on Android, iOS, macOS, web, and Windows. Alongside messages and voice and video calls, it supports high-definition photos, animated stickers, GIFs, reactions, and chat themes. Stories photos and videos and shared Notes disappear after 24 hours, while sent messages can be edited for up to 15 minutes. Meta AI can answer questions, give advice, and help with homework, but is available only in select languages and countries. Meta says personal messages are becoming end-to-end encrypted by default, protecting message and call content in transit from Meta seeing or hearing it. Encrypted chat history can be saved in secure storage and accessed with a six-digit PIN or a key stored in Google Drive or iCloud. Disappearing messages are available only in end-to-end encrypted conversations and last 24 hours. The desktop apps for Windows and macOS offer group video calls, notifications, and chats synced across mobile and desktop.

SimpleX Chat is a messaging application for the SimpleX platform, with apps for Android, iOS, Linux, macOS, and Windows. It supports encrypted text with Markdown and editing, media and file sharing, decentralized groups, voice messages, disappearing messages, and audio and video calls. The network does not assign profile identifiers such as phone numbers or usernames. Messages and metadata use end-to-end encryption with continuous post-quantum key exchange. Four servers participate in each chat so relay servers cannot see which IP addresses communicate. Profiles, contacts, and messages remain in a portable encrypted database on user devices; relay servers hold encrypted messages only until delivery. Users may operate their own servers and still reach people using preconfigured servers. Developers can build bots and integrations using protocol SDKs; the TypeScript SDK connects to the Chat CLI over a WebSocket API. A phone or tablet can link to the desktop app only when both devices share a local network. Disappearing messages and recipient-side deletion are not guaranteed when a recipient device is offline or modified. The free plan costs nothing.