This project has been going for years. Good to see it lives on.

IMO there's a paradox with these privacy-focused mobile solutions. Just as with the expensive flagship corporate devices, the massive price tags suggest an assumption that we are doing all our computing on mobile. That's now the case for most normies. But for anyone who really cares about their privacy (not to mention sanity), there's a better solution available: repatriate most of one's computing to a laptop. At which point all these mobile devices become unjustifiably expensive. Hence the paradox.

PS: downvoting a reasoned opinion, apart from being lazy and toxic in any community, does not constitute a rebuttal.

'Approve this transaction in your smartphone app'. That is the killer.