Cirrus
Cirrus is a macOS note-taking app that lets you open floating notes over any app for quick capture, reference, and lightweight writing.
What is Cirrus?
Cirrus is a native macOS productivity app for keeping notes close at hand while you work. It is built for people who want to capture thoughts, reminders, reference material, and small working notes without switching away from the app they are using. Cirrus opens a floating note with a keyboard shortcut, supports Markdown-style formatting, and helps users organize notes with links, tags, and search. It also includes features for inline calculations, clipboard capture, and exporting notes as plain Markdown files. For Mac users who prefer a quick, always-available note space instead of a full document workspace, Cirrus fits neatly into everyday writing, planning, and research workflows.
Key features
- Open a floating note from anywhere with a keyboard shortcut.
- Write in Markdown with support for checklists, highlights, tables, images, and code.
- Link notes together and organize them with tags and search.
- Perform inline calculations for numbers, units, dates, time zones, and currencies.
- Capture copied text into notes with clipboard collection tools.
- Sync notes through your own iCloud account across your Macs.
- Export notes as plain Markdown files for backup or reuse.
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Safety overview
Status: Mostly safe
Cirrus is a legitimate note-taking app for macOS. Access to your keyboard shortcuts, clipboard content, or iCloud storage is consistent with its note-capture and sync features. As with any notes app, the main privacy consideration is the kind of information you choose to store in it, especially if you save sensitive work or personal details. If you use sync features, keep in mind that your notes may be available on other Macs signed in to the same iCloud account.
Recommendation: Keep Cirrus if you use quick-access notes during work, study, or writing. Remove it only if you no longer want its floating note workflow or prefer another notes app, and export any notes you want to keep first.
Common paths
/Applications/Cirrus.app
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