All-in-one
productivity
Manage your tasks, plan your schedule, journal and take notes, and track your habits, all in one place. Built around a Markdown vault you fully own, that works offline and never phones home.
Tasks
Eisenhower matrix with four quadrants. Drag, sort, search, and focus, with a built-in focus timer.
Calendar
Month, week, day, and agenda views. iCal import and export. Click any slot to create an event.
Notes
A full Markdown editor with wiki links, backlinks, daily journal, templates, and a live note graph.
Habits & Goals
Daily habits with streaks and check-in history, plus big-picture goals with periodic reflection.
Everything connected,
nothing missing.
Each pillar works on its own and even better together. A task links to a calendar event. A goal surfaces related notes. A daily note carries forward what you didn't finish. Add sync when you're ready.
Eisenhower Task Matrix
Four quadrants: Do Now, Schedule, Delegate, Eliminate. Drag tasks between them, right-click to focus or reschedule, search across all at once.
Calendar
Month, week, day, and agenda views. Click any slot to create an event. Import and export iCal (.ics) files. Recurring events, task-linked events.
Note editor
Three modes: Source, WYSIWYG Live, and Reading. Wiki links, hashtags, backlinks, folder tree, note graph. Templates and daily notes with carry-forward.
Habits and Goals
Daily habits with streak tracking, check-in history, weekly charts, and completion-rate bars. Big-picture goals with periodic reflection. Check-in prompts and quick replies are yours to define. Pause a habit without breaking your streak.
Focus timer
15, 25, or 50-minute focus sessions. Persistent focus bar shows a live countdown. Completion sound when time runs out. Mark the task done without leaving.
Note graph
Force-directed graph of all notes connected by wiki links. Click to open, drag nodes to rearrange; connected notes are pulled along by spring physics.
Yours to use however you like.
The app is free on every platform. Astraeus Sync is the only paid thing, and it's optional.
Windows, macOS, Linux, iOS, and Android. Every feature, no account, no ads.
- Tasks, calendar, notes, and habits, all in one app
- The full app on desktop, phone, and tablet
- Works fully offline, no account, no AI, no tracking
- Free sync with Dropbox, Syncthing, or iCloud
- Local-first Markdown vault you fully own
Per user, per month, billed annually. Per user, per month, billed monthly. Keeps everything in step across all your devices.
- Automatic sync across all your devices
- Desktop and mobile, always in step
- End-to-end encrypted, so we can't read your data
- No Dropbox, iCloud, or Syncthing needed
- Never required. Free self-managed sync always works.
Astraeus Sync is the only paid product. Final price confirmed at launch.
Coming soon
Astraeus is in development. Leave your email to hear the moment it's ready, no spam.
Windows
Windows 10 and later
macOS
macOS 12 Monterey and later
Linux
Any distro
iOS
iPhone and iPad
Android
Android 10 and later