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Private chat app using wifi only. No SIM available
(sh.itjust.works)
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
much thanks to @gary_host_laptop for the logo design :)
Jabber (XMPP) or Matrix/Element.
Https://snikket.org will get you started with XMPP easily.
Conversations on Android and Siskin on iOS.
One non-techie parent has Siskin running on their iPhone and it hasn't skipped a beat in years of messaging using omemo-encrypted XMPP. For servers, they're on tigase.im and I'm on conversations.im.
Here's a guide on optimum siskin settings; I don't know if defaults are better now or not.
Conversations.im is free on fdroid but it's well worth paying something to the developer directly.