Narwhal said they are going to continue and start going subscription only once Narwhal 2 is released. Apparently they worked out some kind of delay on billing.
Yeah I remember how they tried telling the Apollo dev that the bills won't be due for 30 days so that was like giving them more time. I'd expect that any apps that are still open are going to get a bill in a month.
Narwhal is still open too, I pulled up a list of my subreddits to look for equivalents.
You can't just charge people out of nowhere when they didn't sign a contract and blatantly did not consent via their announcements their apps were dead