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Calendar Import-Export vs ICSx⁵: catalog facts
Calendar Import-Export	ICSx⁵
Free Free and open source under the GPL 3.0.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Works without Google synchronization services Uses the standard ICS format	Works with any Android calendar app Supports both Webcal URLs and local files
Manual import and export rather than continuous sync Updates are infrequent	Subscribed calendars are read-only No two-way sync; DAVx⁵ is needed for that
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0-only
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.