Sorry! I did not see the notification. So appflowy I think is desktop only for now, but afaik there is work in progress to bring it on mobile https://github.com/AppFlowy-IO/appflowy-editor/issues/68
As for silverbullet, the app is basically a PWA so if you have a server you can theoretically run it there and access it anywhere. I never tried but I heard people even collaborating, so. I had access to testflight beta for iOS, but I believe at one point the developer decided to focus more on stability and less on multi-platform releases, but I’m not sure. They have a discord channel where they are very active though.
This. Plus as a subjective thing: I personally remember stuff more easily when I write them down compared to typing. Also my written notes mix bullet points, regular writing, arrows and connections, without having to “switch mode” or install plugins.
I still use note-taking apps, sometimes as primary, sometimes as secondary tool.