Lief App

Lief App

Track HRV, relieve stress

0 ratings
47 reviews
Free

Details

  • Released
  • Updated
  • September 28, 2017
  • July 14, 2026

Features

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About

This smart patch discreetly tracks heart rate and variability to help you manage stress. It offers drug-free biofeedback exercises to train your body's stress response, promoting mindfulness and control.

HRV tracking
Heart rate monitoring
Biofeedback exercises
Stress response training
On-demand stress relief
Drug-free solution
Show original description

What's New in Lief App

14.3

July 14, 2026

Onboarding flow improvement

User reviews

Unable to download the latest update on iOS 15 Pro

Unable to download the latest update of the App. Tried deleting the app, restarted the phone multiple times and different networks with no success.

Update broke the app on Day 2

I only got to use Lief for 1 day before version 8.1 bricked it. Now it’s stuck on the pulsing screen and won’t connect on either iPhone or Mac. Please fix ASAP — I’ll update this review once it works again.

Difficult to Connect

I like the Lief device when it is working. However, most of the time there is connectivity problem. A friend also has the same problem with Lief. Customer support is not much help.

Not reliable for the $$

When you pay over $230 for something you expect no problems. The self pacing doesn’t work 1/2 the time (the buzzing). The HR/HRV meter seems to work fine.

Awesome HRV-B device

This is the only wearable that’s taught me what to do to raise my HRV. The Downtime breathing has really helped me learn to regulate my nervous system and learn what my stressors are and how to work through them.

Response from developer

Hi Nicole, Thank you for sharing your feedback on our program, your experience with us is giving us more reason to keep helping more people. We hope to help more individuals like you in the future!

FAQ

What does the Lief App do?

The Lief App utilizes a discreet smart patch to measure your heart rate and heart rate variability. It then guides you through biofeedback exercises designed to help you train your body's natural stress response, promoting mindfulness and control throughout your day.

What are the key features of Lief App?

Key features include clinically-accurate heart rate and HRV tracking via a smart patch, guided biofeedback exercises for stress response training, and on-demand stress relief interventions. It offers a drug-free approach to improving health and maintaining mindfulness.

How much does Lief App cost?

Based on the provided information, the app itself does not have in-app purchases or ads, suggesting a one-time purchase model for the associated hardware and software. Specific pricing details would typically be found on the app's store page or the developer's website.

Who is the Lief App for?

This app is designed for individuals seeking a non-pharmacological method to understand and manage their stress. It is suitable for those interested in biofeedback, heart rate variability tracking, and improving their overall mental and physical well-being through mindful self-regulation.