Siskin IM is a lightweight and powerful XMPP app for iOS. It offers multiple color themes, an easy way to share photos, multi-device sync, video calling, and end-to-end encryption with OMEMO. It is GPLv3 licensed.

WARNING: Apple's App store and iOS are non-free. To better protect your security and privacy, you should consider using another OS.

  1. To install Siskin, first download it from the Apple app store:
  2. If prompted to allow notifications, tap Allow:
  3. Tap Create new XMPP account:
  4. For Preferred Domain Name, use one of our free XMPP servers. In this example, we use Then, tap Next:
  5. Fill in the username and password:
  6. Tap Enable to allow push notifications:
  7. Registration is complete: