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DAVx⁵ vs Infomaniak kSync: catalog facts
DAVx⁵	Infomaniak kSync
Free The open-source edition is available at no cost from F-Droid.	Free The app is free and open source; it needs an Infomaniak account.
Android	Android
Two-way sync of contacts, calendars and tasks in one app Works with the calendar and contacts apps already installed	Based on the established DAVx5 sync engine Login set up for Infomaniak accounts automatically
Android only Needs a CalDAV, CardDAV or WebDAV server to sync with	Only useful with an Infomaniak account Android only
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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