Lief App

Lief App

The wearable for stress relief

2 ratings
47 reviews
Free

Details

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

Features

Lief App screenshot #1 for iPhone
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Lief App screenshot #8 for iPhone
iphone
ipad
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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
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What users say

See all reviews

What's New in Lief App

14.5

September 28, 2026

Performance and reliability improvements.

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!

User experience

🐞

Reported Bugs

19 issues

Unable to download latest update

Bug

App bricked after update

Bug

Stuck on pulsing screen

Bug

Won't connect on iPhone or Mac

Bug

Self-pacing (buzzing) not working

Bug

Annoying check-in feature cannot be turned off

Bug

App cannot be opened

Bug

Cancel subscription button not working

Bug

App crashes upon opening

Bug

App kicks user off after update

Bug

App crashes multiple times when opened

Bug

App does not reliably download data

Bug

App unstable after recent updates

Bug

App crashes, kills battery

Bug

App chews through cell data

Bug

App not connecting reliably to internet

Bug

App does not work without connection

Bug

Device keeps telling user they are stressed

Bug

App takes a long time to load

Bug
✨

Requested Features

6 requests

Add button to turn off vibration

Feature

Make subscription more affordable

Feature

Sell device outright

Feature

Provide clear instructions/manual

Feature

Improve data breakdown and comparison

Feature

Allow adding notes for activities/moods

Feature

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.