love me some briar, but signal is a legitimately decent privacy focued app with serious mindshare, adoption and ux/ui features. I love them both, but unless the other person is a technophile, signal is my go to recommendation and briar remains my “secret club” app.
My exact use case haha. Became invaluable when the internet was unavailable. Used my phone’s hotspot to create a wlan, then used it to communicate with those I needed to. Communicate internetlessly with your nearby groups, brought to you by Briar.