# Lief App vs Yudemon HRV

The clearest difference is review sentiment: Yudemon HRV at 90% against Lief App's 45%. Yudemon HRV also leads on update cadence (every 2 days vs monthly). Lief App's advantage is in-app purchases (none vs 4) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Yudemon HRV sells 4 in-app purchases, starting at $2.99 per month. Lief App asks for nothing beyond the download.

Lief App ships an update monthly, Yudemon HRV every 2 days. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Lief App | Yudemon HRV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (12 ratings)](https://appshunter.io/ios/app/yudemon-hrv/id1629852639/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | 44.7% of reviews | **90.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 80 MB | 169 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BrainBot, Inc.](https://appshunter.io/developer/558159738) | [Yudemon LLC](https://appshunter.io/developer/1629852641) |

## What reviewers say

### Lief App

[App page](https://appshunter.io/ios/app/lief-app/id1289075477)

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.

**Highlights:** HRV tracking, Heart rate monitoring, Biofeedback exercises, Stress response training, On-demand stress relief, Drug-free solution

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Effective stress management
- 💡 Improved anxiety levels
- 💡 Real-time biofeedback
- 💡 Helps regulate nervous system
- 💡 Teaches breathing techniques

**What reviewers complain about**

- 🐛 Connectivity issues
- 🐛 App is buggy
- 🐛 App crashes frequently
- 🐛 Difficult to connect
- 🐛 Unreliable

**Reported bugs**

- Unable to download latest update
- App bricked after update
- Stuck on pulsing screen
- Won't connect on iPhone or Mac
- Self-pacing (buzzing) not working

**Requested features**

- Add button to turn off vibration
- Make subscription more affordable
- Sell device outright
- Provide clear instructions/manual
- Improve data breakdown and comparison


### Yudemon HRV

[App page](https://appshunter.io/ios/app/yudemon-hrv/id1629852639)

Enhance stress resilience and self-regulation with this visual and sonic tool for resonance breathing and HRV biofeedback. Connect a heart rate monitor for advanced analytics and personalized training journeys. Enjoy dynamic visuals and custom soundscapes designed to optimize your practice.

**Highlights:** Resonance breathing timer, HRV biofeedback training, ECG heart rate monitor integration, Journey Mode for optimal breathing rate, Customizable visuals and soundscapes, Heartwork generative art based on data

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yudemon Pro (Monthly) | $2.99 | per month |
| Yudemon Pro (Monthly) | $4.99 | per month |
| Yudemon Pro (Yearly) | $19.99 | per year |
| Yudemon Pro (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is Lief App free?

Lief App is free to download, with no in-app purchases.

### Is Yudemon HRV free?

Yudemon HRV is free to download, with in-app purchases available.

### Do Lief App or Yudemon HRV have ads?

Neither Lief App nor Yudemon HRV shows ads.

### Which is updated more often, Lief App or Yudemon HRV?

Lief App ships an update monthly, and Yudemon HRV every 2 days. Most recently, Lief App was updated on September 20, 2026 and Yudemon HRV on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*