MaxMessenger

A secure and private messaging app. Easy to use, reliable, battery-friendly. With built-in support for images, group chats, and location sharing. End-to-end encrypted by default.

Features
• End-to-end encryption
• Send and receive images and other kinds of files
• Encrypted audio and video calls
• Advanced machine-in-the-middle detection via channel binding (requires opt-in)
• Share your location
• Send voice messages
• Emoji reactions
• Indication when your contact has read your message
• Intuitive UI that follows Android design guidelines (Material Design 3 with Dynamic Colors)
• High-resolution contact photos (avatars)
• Private group chats and public conferences (with support for bookmarks)
• Message moderation for admins in public conferences
• Address book integration
• Very low impact on battery life

Design principles
• Be as beautiful and easy to use as possible without sacrificing security or privacy
• Rely on existing, well-established protocols
• Do not require a Google account or specifically Firebase Cloud Messaging (FCM)
• Require as few permissions as possible