Android Apps to End-to-End Encryption

Firefox Send is a secure, free online service from Mozilla for sharing files with end-to-end encryption. It allows users to upload files, protect them with passwords, and set download limits or expiration dates for enhanced privacy and control.

Icedrive is a secure UK-based cloud storage solution emphasizing data privacy and security through client-side encryption. It offers a seamless interface for storing, syncing, and sharing files, with a unique drive-mounting feature for easy access.

Joplin is a free and open-source note-taking and to-do application designed for users who value data ownership, privacy, and flexibility. It offers robust synchronization options, including cloud services like Dropbox, OneDrive, and Nextcloud, as well as WebDAV. With support for Markdown, powerful search capabilities, and cross-platform availability, Joplin is a versatile tool for organizing information and boosting productivity.

GoodSync is a powerful and reliable file synchronization and backup software that automates data transfer and protection. It allows users to sync files between various devices, cloud storage, and FTP/SFTP servers, ensuring data consistency and availability across multiple locations.

Degoo is a cloud storage platform offering secure online backup and file synchronization with a focus on providing generous free storage. It allows users to store, sync, and share files across multiple devices, emphasizing data protection through encryption.

favattic is a cloud-based online bookmark manager designed for individual and collaborative use, offering features for organizing, sharing, and annotating web content.

FilesAnywhere provides secure cloud storage, file sharing, and collaboration tools for individuals and businesses. It offers robust features like version history, real-time collaboration, document editing, and integrated search, ensuring data accessibility and security across various devices.

Boxcryptor provides robust end-to-end encryption for your cloud storage services and local files, ensuring your data remains private and secure. It seamlessly integrates with a wide range of cloud providers and offers strong AES-256 encryption to protect your sensitive information from unauthorized access.

Google Allo was a smart messaging app designed for mobile devices, integrating artificial intelligence to enhance conversations with features like canned responses, a built-in photo editor, and enhanced security options.

Join by joaoapps is a cross-device synchronization tool that simplifies interaction between Android devices and PCs, offering seamless file sharing, notification mirroring, clipboard sync, and remote control functionalities for enhanced productivity and connectivity.

GoAruna is a comprehensive file management and cloud storage solution for Android devices. It combines a powerful local file manager with integrated online file hosting, sharing, and synchronization capabilities. GoAruna aims to provide unlimited storage and seamless file access across various platforms.

Wickr is a secure and private instant messaging platform designed for individuals and teams who prioritize confidentiality. It offers end-to-end encryption, self-destructing messages, and a focus on anonymity to ensure that conversations and shared data remain protected.

Silence.im is an encrypted text messaging application for Android that prioritizes user privacy and security. It allows for secure communication via SMS/MMS, offering end-to-end encryption when communicating with other Silence users. The app is open-source and ad-free, providing a simple yet powerful platform for private mobile messaging.

Journey is a versatile private journal and note-taking application designed to securely store your personal memories, ideas, and reflections across devices, ensuring your privacy while providing a rich writing experience.

PasteFS is a versatile digital assets manager and pastebin service designed for securely sharing text, code, files, and images. It offers strong privacy features, including end-to-end encryption, alongside convenient tools for developers and content creators.

Mintstash is a comprehensive personal data management platform designed to provide secure access, backup, and synchronization of your valuable information across devices and storage locations. It offers control over your data with options for self-hosting and strong encryption.

NoteCase Pro is a versatile, cross-platform application designed for efficiently capturing, organizing, and managing various types of information. It offers a hierarchical structure, robust security features, and extensive customization options for users across different operating systems.

Google Duo is a high-quality video calling application designed for simplicity and reliability. Available across multiple platforms, it offers crisp video and clear audio, making it ideal for connecting with friends and family securely.

Sicher is a freeware instant messaging application designed for enhanced privacy and security on mobile platforms like iOS, Android, and Windows Phone. It offers end-to-end encrypted messaging, secure file and media sharing, and features like self-destructing messages, focusing on keeping your conversations private.

Zoiper is a versatile and easy-to-use SIP softphone designed for clear voice and video communications. It offers excellent audio quality, robust security features, and seamless integration with various communication protocols, making it ideal for personal and business use.

Memopal is a comprehensive cloud-based service for online backup, file storage, and synchronization. It allows users to securely store their data in the cloud, access it from anywhere, and share files and folders with others. Key features include data recovery, incremental backups, file versioning, and robust encryption for enhanced data security.

Diaro is a comprehensive digital journal and diary application designed to capture daily activities, experiences, thoughts, and ideas. It offers seamless synchronization capabilities across multiple devices, ensuring your private entries are accessible and backed up.

Curse is a comprehensive online platform designed for the gaming community, integrating robust chat, voice communication, and game management tools.

Twindocs is a secure cloud-based document management system designed for both individuals and organizations. It offers advanced encryption, robust synchronization capabilities, and a suite of features for organizing, sharing, and protecting your digital documents.

Conversations is a privacy-focused, open-source XMPP/Jabber client for Android. It offers robust end-to-end encryption using OMEMO and OTR, supports modern XMPP extensions, and provides a secure, decentralized messaging experience without relying on proprietary servers. It's an ideal choice for users prioritizing security and open standards.

Livestorm is an end-to-end video engagement platform designed for hosting webinars, online events, and meetings directly in your browser. It provides powerful tools for audience interaction, lead generation, and detailed analytics without requiring any downloads.

Transpose was a versatile workspace designed for individuals and teams, combining elements of note-taking, project management, CRM, and data organization into a single, flexible platform. It empowered users to structure information and collaborate efficiently.

OpenDrive provides a comprehensive online cloud storage solution with features for file synchronization, sharing, and backup. It supports WebDAV and offers unlimited bandwidth and storage options.

KakaoTalk is a popular mobile messaging service offering free text, voice, and video calls. Primarily used in South Korea, it provides a comprehensive communication platform with features like group chats, stickers, and a strong emphasis on user privacy and security.

Tango is a comprehensive communication platform that offers free messaging, high-quality video and voice calls, and features for discovering and connecting with new people. It integrates social elements like photo sharing and groups, alongside essential security and privacy features.