Penbase
A fast, private Markdown notes app for Mac, iPhone, and iPad
Styles as you type
Backlinks & version history
No ads or tracking
Styled as you type
Plain Markdown styles in place: headings, lists, checkboxes, tables, code.
Groups, tags & search
Groups, pins, inline #tags, and full-text search across your notes.
Backlinks & version history
Connect notes with [[wiki links]], see what links back, and restore an earlier version.
iCloud sync
Off by default. Turn it on to sync through your own iCloud account.
Requires macOS 26 or iOS / iPadOS 26