Please try the free app before buying, if you like the features buy the pro version,features are exactly the same, except the planned import/export, so if something wont work in the free version, it also wont work in the pro versioniCal Import/Export 2.4is the ultimative import/export sync app for your android calendar with first class support for everyone.See always whats happening, instead of other apps, nothing is hidden from the user, you can even view all events before importing.For more information visit http://www.drlue.tk/ical
Import/ExportYou can import and export from various sources and to various destinations:★WebDAV★Ftp★Websites★Internal/external storage★Email★Document provider support (Android Kitkat and above)
Create, edit or delete android calendars
Pro Features (14 days testing in free version):
Scheduled Import/ExportPlan your imports/exports. You can run them in fixed intervalls.
CalDAV (Android 4.0 and above, only events, attendees and reminders, no tasks or contacts)★iCloud★fruux★owncloud★baikal★Posteo★Gmx★Web.de★Synology★Many others, but they are not tested★No support of mailbox.org, memotoo and Yahoo
Extra Features★Copy calendar (you can copy all events from one calendar to another one)★Purge calendar (delete all events from a calendar)
Widgets for your homescreenKeep track of all your connected CalDAV Servers and planned imports/exports directly on your homescreen. All operations can also be started from the widget.
You always want the most recent features?Join this google group:https://plus.google.com/communities/113609682619240936618And activate the beta test:https://play.google.com/apps/testing/tk.drlue.icalimportexport.premium
Used premissions explained★Identity (Create an account for the CalDAV Syncadapter)★Contacts/Calendars (Read/Write events to android calendar)★Photos/Media/Files (Read/Write iCalendar files to internal/external storage)
Thanks to:★http://ical4j.sourceforge.net for the parser/interpreter★https://github.com/lookfirst/sardine and https://github.com/aflx/Sardine-Android for the WebDAV implementation★https://github.com/brk3/android-color-picker for the color picker