A free Windows calendar that stays on your desktop.
You can see today's schedule without minimising windows or opening a calendar app again.
Pick the look that suits your wallpaper
Pastel for a light wallpaper, Dark for a dark one. Turn the opacity down and the wallpaper shows through, while the text and the events stay clear.
Main features
Events and to-dos
- Events, to-dos, repeating events Keep the day's events and to-dos in one place. Weekly or monthly repeats only need writing once.
- Connect the calendar you use Connect one Google account or one Microsoft account and its events appear here too. Changes you make in ONHARU are saved back to that account.
- Subscribe to public calendars Subscribe to up to ten public ICS calendars. Add the ones you check often - public holidays, a school timetable, sports fixtures.
Views
- One to six weeks at a glance The first day of the week, lunar dates and the holiday colors can all be changed.
- D-Day and anniversaries Count down to exams and deadlines with D-Day. Birthdays and anniversaries have their own category, and lunar birthdays can be added too.
- Timetable, alarms and timers The event manager opens from the top bar too.
Appearance and position
- Skin, color and opacity settings Colors and transparency are set per skin.
- Quick changes without opening Settings Change the opacity, view range, skin, and Move/Lock mode from the header.
Moving events and backups
- Backup, restore, import and export Export events to a file and import them again when needed.
More screens
Free and ad-free editions
| Feature | Free | Ad-free |
|---|---|---|
| Events, to-dos, repeating events | ✓Yes | ✓Yes |
| Connect the calendar you use | ✓Yes | ✓Yes |
| Subscribe to public calendars | ✓Yes | ✓Yes |
| One to six weeks at a glance | ✓Yes | ✓Yes |
| D-Day and anniversaries | ✓Yes | ✓Yes |
| Timetable, alarms and timers | ✓Yes | ✓Yes |
| Skin, color and opacity settings | ✓Yes | ✓Yes |
| Quick changes without opening Settings | ✓Yes | ✓Yes |
| Backup, restore, import and export | ✓Yes | ✓Yes |
| Remove the ad banner | -No | ✓Yes |
| Collapse the detail calendar | -No | ✓Yes |
| Pin the calendar to the desktop | -No | ✓Yes |
FAQ
Do I need an account?
No. Download it, install it, and it works. Connecting a Google or Microsoft account is optional, and only for seeing that account's events here too.
Where are my events stored?
In %LOCALAPPDATA%\Onharu on this PC. If you do not connect an account, nothing leaves this machine.
Does the free edition show ads?
A banner sits under the detail calendar. Every calendar feature is free.
If I remove it, do my events go too?
Removing the program and deleting your data are two different things. Leave the data in place if you may reinstall; delete it separately only when you are done for good.
Does it work without an internet connection?
Writing events and working with the data on this PC needs no internet. Syncing a connected calendar, refreshing a subscribed calendar and checking for updates do.
I pinned it and now I cannot resize it
You cannot resize while pinned. Switch to Move first, then resize.
How do I update?
Press Check now in Settings. If no notice appears, download the installer from this page and install it over the current version. Your events and settings are kept.
For anything else, see Guide · FAQ
Download
- Version
- 2.2.25 · 30 September 2026
- Size
- 2.5 MB
- OS
- Windows 10 and 11, 64-bit
- Windows may show an “Unknown publisher” notice during installation The installer is not code-signed, so Windows shows this notice.
Code signing costs a yearly fee, so it has not been applied yet. Choose More info, then Run anyway, and it installs. - 64-bit Windows only Windows 11 supports 64-bit systems only, and support for 32-bit Windows 10 has ended, so a 32-bit build was never developed.
The test build is the version in development. It installs over the current release, and your events, settings and backups are kept. Download the 2.2.26 test build
