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HRV4Training vs Welltory: catalog facts
HRV4Training	Welltory
Paid Paid app, with additional Pro and Teams options for coaches.	Freemium Free to start, with some features in a paid subscription.
Android, iOS	Android, iOS
Measures HRV with the phone camera, no sensor needed Supports Bluetooth chest straps, Apple Watch and Oura	Combines data from wearables and phone measurements in one place Explains readings as plain guidance instead of raw numbers
Needs consistent daily measurements to be useful Pricing not detailed on the homepage	Proprietary app with health data processed by the developer Not a medical device or a substitute for medical advice
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	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 September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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