Lief AI

Lief Recovery provides a 12-week wearable heart rate variability (HRV) biofeedback program for substance use treatment providers. Designed to complement—not replace—clinical care, the program helps patients practice regulating their response to stress and craving between appointments, while giving care teams visibility into engagement, craving, and self-reported substance use.

Patients wear the Lief Rx device discreetly on the torso. It tracks HRV and uses private haptic vibrations to guide breathing when physiological changes occur; an optional mobile app offers check-ins and recovery-focused AI support. Providers can review program activity and summaries through a clinical dashboard, with device delivery and returns handled by Lief.

The program includes the wearable rental, app, biofeedback exercises, check-ins, dashboard access, technical support, and return shipping. The standard episode lasts 12 weeks and is priced at $895 per enrolled patient, with enterprise pricing available for larger deployments.

Lief Recovery reports that its approach was studied as an adjunct to treatment as usual in a phase 2 randomized clinical trial published in JAMA Psychiatry in 2025.