What I wanted
My notes are plain Markdown files on my own disk, so they open in any editor and outlive any app. I wanted to write in them without thinking about syntax, find anything in a second, and have them on every machine I use. The sync had to be end-to-end encrypted, so the server carrying my notes could never read them.
I also wanted to share a list with my family or a folder with a colleague without first handing either to a company that could read them.
What it grew into
The Android app came first, so the note I wrote at my desk is on my phone on the train. Sharing followed, with editors and viewers, and edits from different people merging on their own. Then version history, because a paragraph you deleted by mistake should come back with one click.
I read a lot on that phone, so it now opens the EPUB, PDF and CBZ comic books in my vault too. Every passage I highlight lands in a Markdown note I can edit later at my desk.
Where it is now
The app is free on macOS, Windows, Linux and Android, and needs no account. Sync, sharing and version history are what you pay for. Your notes stay plain files either way, and an Obsidian vault opens as it is.
It also works with your AI tools. If you use an assistant such as Claude Code or Codex, it can read and update your notes, and every change it makes shows up in the app. Jotura for AI agents explains how.
Adam, who builds Jotura.