Lumo Android App

Lumo Android App is the official Android client implementation of Lumo, a privacy-first AI assistant created by Proton that lets users interact with an intelligent chatbot securely and confidentially on mobile devices. Lumo is designed so that every conversation remains encrypted and private, meaning chats are not logged, tracked, or used to train external large language models, and all interactions are protected with zero-access encryption so only the user can read them. The Android app offers a responsive, native experience where users can ask questions, summarize documents, brainstorm ideas, or get help with tasks—while Proton’s strict privacy protections extend to the mobile interface. It integrates smoothly with Android’s system UI and supports features like voice input or clipboard sharing for convenience, while respecting user data control and transparency.