XMPP Push Notification Test (iOS)
Preamble: This notification test was executed in June/July 2022. Meanwhile, new versions of Siskin IM and Monal were released. The developers introduced new features which are now mentioned in the pro- and contra-lists of the apps. I did not repeat the tests for the new versions since I do not think that the push notification test results would be any different (I did not test it because it is very time-consuming).