Being p2p, network effects are even larger: you have to convince not only your own friends to install and use, but also rely on enough density in your area?
Helene survivor here. I will be spreading the word about this project and keeping some APKs for if the shit hits the fan again. FDroid being able to sync between local devices means all you need is to get fdroid onto someones phone. Wish they had an iphone app though!
I'm actually super annoyed that popular devices no longer show bluetooth signal strength at all... it's completely absent from the UI.
Impossible to know how well connected my headphones are when I keep hearing popping or distortion... you need special apps to realise how weak the connection actually is (and how absurdly busy the environment is: there are so many bluetooth devices around us.. it's crazy!)
I wonder if one side I very low power emitter designed to connect to the other head-side unit, presumably designed to connect to your device. Some bt headphones are designed with a weak unit and strong unit.
Doesn't Briar itself provide functionality to share the apk via Bluetooth? So you don't even need F-Droid (though it's still good to have regardless, of course).