Import an ICS calendar and merge its events in one place

Export your calendar as an .ics file in Outlook, then open this calendar and use «⋯» → «Import events…» to pick the file. Repeated imports won't create duplicates, because events are matched by UID. There is no live sync with Outlook: import again when you want a fresh copy. Outlook is a trademark of Microsoft; Zotu is not affiliated with Microsoft.

Open the calendar, choose ⋯ → Import events… and pick the .ics file, or drop the file on the calendar window. Its events join the calendar you already have; repeats, exceptions and reminders come with them. The change saves itself about half a second later, so there is no Save button to press.

Import each file into the same calendar. Events merge by UID, so a file imported twice updates its own events instead of duplicating them. When the last file is in, Save as… writes the combined calendar to a new .ics. No converter, no upload and no separate merge tool are needed.

Use the phone's browser: download the .ics, open the calendar page, then choose ⋯ → Import events… and select the file. The menu works where dragging does not, and the events save themselves. The same calendar is then readable on any device where you open Zotu.

Yes, through the file. Use Save as… to write the merged calendar to an .ics, then import that file in the other app. There is no direct sync between the two, so repeat the export when you want a fresh copy. Repeats, reminders and foreign properties survive the trip because they stay in the file.

Nothing is duplicated. Events are matched by UID, the identifier each event carries in the file, so a second import updates the existing events rather than adding copies. This also makes a repeated import a safe way to pick up corrections from a file that was re-exported by its source.

Yes. Repeats, their exceptions and their reminders are read from the file and kept. So are attendees, to-dos, time zone definitions and email alarms that the app itself does not edit. Rules outside the supported subset are still preserved in the file, though the calendar may show that event only once.

No. The calendar reads .ics files, the standard calendar format, and has no CSV import. If a spreadsheet holds your schedule, export it as .ics from a calendar tool first, or add the events by hand — there is no converter on this page. JSON import and export are absent for the same reason.

Importing, merging and saving calendars is free and costs $0. There is no watermark, no file-count limit and no paid tier for the calendar. The only costs anywhere in Zotu belong to optional services outside the calendar, and importing an .ics never touches them.

On this page the file is read in your browser and is not uploaded. Inside Zotu the merged calendar is your own .ics file in your cloud, handled under GDPR, with no third-party calendar servers. Nothing in the file is sent anywhere else, and unknown properties are preserved rather than dropped.