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About Signalline

Signalline is a lightweight messaging app built to run on very little data. It has three parts: a search index, real-time chats, and a local updates feed. Chats and updates only open once you're signed in.

Data & privacy

Messages are sent over a single persistent connection instead of repeated polling, and static assets are cached locally, to keep ongoing data use as close to zero as the network allows. Media sent in a direct message is removed from the server automatically 3 hours after it arrives — no action is needed from either person in the conversation.