I'm still looking for a way to securely store and sync my Obsidian or Logseq notes with iOS. By "securely" I mean data encrypted at rest on the device, but also

I'm still looking for a way to securely store and sync my Obsidian or Logseq notes with iOS. By "securely" I mean data encrypted at rest on the device, but also encrypted on an external server. It seems impossible.