Cross-platform calendar with intelligent cross-calendar time management. Built for people juggling Gmail, Outlook, Apple Calendar, and life.
Demo runs in-browser • Data is not persisted
You've got a Gmail calendar. Multiple Outlook calendars. Things sneaking into Apple Calendar. Your spouse uses Reminders and a paper calendar on the wall.
Calendar A gets blocked, but B and C don't know about it. Calendar B gets scheduled later and silently conflicts. You miss the notification because you're on the wrong computer.
"Hey, are you joining the meeting?"
"Oh crap—I didn't get that notification!"
A quick look at Sundy syncing with Outlook calendar.
See all your calendars in one place. Block time across providers automatically so double-booking becomes impossible.
Works without internet. Fast, responsive, and always available when you need it.
Smart features to help with time blindness and object permanence. Reliable notifications you can actually configure.
Your data stays yours. No tracking, no selling your schedule to advertisers.
Sundy is free and always will be. Optional paid features handle the hosting so you don't have to.
$50/year
Built with .NET and Avalonia. Runs on Windows, macOS, Linux, iOS, and in the browser. Android coming later.
Sundy is a passion project in active development. Star the repo to get notified of releases, or try the demo to see where it's headed.