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Lens HRV vs Elite HRV: catalog facts
Lens HRV	Elite HRV
Free Free and open source under the GPL-3.0 licence.	Freemium Free to download, with some features in a paid plan.
Android	Android, iOS
Uses only the phone camera, no extra sensors Open source and available on F-Droid	Daily readiness score based on HRV Live biofeedback for breathing and stress
Camera PPG is less precise than a chest strap Android only	Closed source commercial service Readings are taken manually each day
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is 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 September 24, 2026

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