One word finds it
The recent documents stay on the phone for where there is no signal, and search works there too.
iPhone
A Markdown editor for the notes and docs kept in a git repository you already have. Read and write them without learning the syntax, dictate a note, answer a comment - on GitHub, GitLab, or a GitLab server of your own. Nothing new to sign up for.
In beta on TestFlight, and not on the App Store yet. The desktop app for macOS and Windows is out now.
Every file is laid out to read - tables, diagrams, formulas and the pictures it points at - and stays plain .md in your own repository.
Or a GitLab server of your own. Sign in on the host's own page, tick the repositories you want with you, and each one becomes a workspace on this phone.
The recent documents stay on the phone for where there is no signal, and search works there too.
It lives in git, next to the document. A question left on a document reaches you here, and your reply goes back as a commit under your name.
All your data is on this phone and in your git. An edit sits here, marked as not sent, until you publish it with one sentence about what changed - and then it is a commit under your name, in the repository you already had.
The honest state of the phone app today.
Send the address your Apple ID uses and an invitation goes to it. TestFlight writes to that address, and it is not passed anywhere.
The same documents open on the desktop meanwhile, where the review tools are.