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Health Disconnect vs Cairn: catalog facts
Health Disconnect	Cairn
Free Free and open source under the Apache-2.0 licence.	Free Free and open source under the MIT licence.
Android	Android
Charts more than 35 Health Connect metrics Custom views combining multiple metrics	Exports to an open standard format, Open mHealth JSON Data goes only to your own Nextcloud
Depends on data other apps have written to Health Connect Small, young project	Requires a Nextcloud server Very new project with few users
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	Not stated if an account is needed
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.