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

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