Tinfoil

Tinfoil is a web-based chat application designed around user privacy. Its core function is to provide an interface for interacting with AI models, but it does so in a way that keeps your conversation data on your own device. By default, all your chats are stored temporarily in your browser's local storage, meaning the service's servers don't retain your history. This setup is for users who want to use AI chat capabilities but are wary of their queries and personal information being stored or analyzed by a third party.

The tool works by giving you a clean chat interface. You can start new conversations, and a notable feature is the ability to create 'projects' where you can upload files to chat about their contents. It also includes practical features like speech-to-text for voice input and a clever 'Ask' button that lets you highlight text within the chat to start a side-conversation specifically about it. For users who want more convenience, a Premium subscription adds cloud backups and synchronization across devices, shifting from a strictly local model to a managed one.

Tinfoil is most useful for individuals and professionals who handle sensitive information. A researcher could use it to discuss confidential notes, a writer could analyze drafts, or anyone could simply ask questions they'd prefer not to have in a permanent server log. It removes a major privacy concern from the AI chat experience, making it a straightforward choice for those who prioritize data control.