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Session iOS

Download Session on the App Store


Session integrates directly with Loki Service Nodes, which are a set of distributed, decentralized and Sybil resistant nodes. Service Nodes act as servers which store messages offline, and a set of nodes which allow for onion routing functionality obfuscating users' IP addresses. For a full understanding of how Session works, read the Session Whitepaper.


Want to contribute? Found a bug or have a feature request?

Please search for any existing issues that describe your bugs in order to avoid duplicate submissions. Submissions can be made by making a pull request to our dev branch. If you don't know where to start contributing, try reading the Github issues page for ideas.

Build instructions

Build instructions can be found in


Want to help us translate Session into your language? You can do so at!


Copyright 2011 Whisper Systems

Copyright 2013-2017 Open Whisper Systems

Copyright 2019-2021 The Loki Project

Licensed under the GPLv3: