Comparison

sleep² sleeptracker & analysis vs Yudemon HRV

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

sleep² sleeptracker & analysis

This app acts as a personal guide to better sleep, combining innovative sleep training with precise sleep tracking and analysis. It offers an EU-approved medical device program for acute sleep disorders like insomnia, providing personalized recommendations and sleep training based on your data.

Highlights
  • Sleep tracking and analysis
  • Sleep training programs
  • Personalized recommendations
  • Interactive chatbot
  • Data import (Polar sensor, Apple Health)
  • Manual sleep diary entry
Read full description

Discover Sleep Anew: sleep² - Your Sleep Tracker sleep² is your personal guide to better sleep. It combines innovative sleep training with a precise sleep tracker. Sleep trackers provide valuable insights into your sleep. The sleep² Intensive Program is an EU-approved medical device, specifically designed for people with acute sleep disorders like insomnia. Our scientifically based method has already helped thousands improve their sleep quality through systematic and gradual sleep tracking and training. sleep² Pro: Based on sleep analysis, the program adapts to individual sleep data, delivering precise recommendations from your sleep tracker. Sleep Tracker: Analyze sleep using a Polar sensor or import data via Apple Health. Manually enter sleep data into the sleep diary if no tracker is used. Based on the sleep data, you get: Detailed recommendations based on sleep analysis Sleep training for better sleep An interactive chat-bot to help you sleep better Sleep analyses always available—no waiting like in sleep labs Precise sleep analysis through innovative algorithms for sleep improvement Free download & basic functions Full features of sleep² (precise sleep analysis, personalized programs) with subscription purchase Download sleep² - Our sleep tracker and precise sleep analysis help improve sleep! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Yudemon HRV

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
Read full description

Yudemon HRV is a unique visual and sonic tool for resonance breathing and HRV biofeedback training. It provides a fun and engaging workout for your autonomic nervous system, helping you build stress resilience and enhanced self-regulation. You can either use the app as a basic breath timer, or connect an ECG-based heart rate monitor (like the Polar H10) via Bluetooth for full biofeedback and analytics. Unless you specifically opt-in to cloud sync, all data processing happens on your device, so your data is completely secure. Using Yudemon with a heart rate monitor not only allows you to track and visualise your data for each session, it also enables you to use Yudemon's Journey Mode, a novel and unique way of establishing your own optimal breathing rate over the course of multiple sessions. Yudemon's adjustable visuals and soundscapes offer infinite variations, making every breathing session feel fresh and engaging. By default, the app’s appearance automatically changes on a daily basis. Or, with Yudemon Pro, you can take full control and customize everything manually. A healthy heart does not beat like a metronome but constantly adapts to the requirements of the present moment. Heart rate variability (HRV) biofeedback training and resonance breathing are based on the fact that our breathing has a direct impact on the rest of our physiology. By controlling our breathing in specific ways we can train our body to become more adaptable and perform better under stress. Yudemon helps you with this practice. Yudemon HRV is the first breathing app with custom soundsapes and functional music specifically designed for resonance breathing and HRV biofeedback training. The soundscapes guide you in your breathing sessions and aim to enhance the effects of the practice. It also integrates other aspects of generative art, such as the "Heartwork", a unique piece of art based on your very own physiological data that is generated and grows with you as you complete more sessions. New visuals, soundscapes, and effects are added on a regular basis. Terms of Service: https://app.yudemon.com/terms Privacy Policy: https://app.yudemon.com/privacy

Screenshots

sleep² sleeptracker & analysis4 screens
Yudemon HRV4 screens

Verdict

The call

The clearest difference is rating: Yudemon HRV at 4.5 against sleep² sleeptracker & analysis's 3.6. Yudemon HRV also leads on update cadence (every 2 days vs every 2 weeks) and review sentiment (92% vs 62%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. sleep² sleeptracker & analysis sells 4 in-app purchases, starting at $9.99 per month and Yudemon HRV sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Yudemon HRV holds the better App Store score, 4.5 against 3.6. Both are backed by a comparable volume of ratings — 37 and 13 respectively. Written reviews point the same way: 62% of sleep² sleeptracker & analysis's written reviews are positive against 92% of Yudemon HRV's.

UpkeepUpdate frequency

sleep² sleeptracker & analysis ships an update every 2 weeks, Yudemon HRV every 2 days. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
sleep² sleeptracker & analysis versus Yudemon HRV: the parameters behind the verdict, then further details
Parametersleep² sleeptracker & analysisYudemon HRV
PriceFreeFree
Rating3.6 (37 ratings)4.5 (13 ratings) — better
Positive reviews61.7% of reviews91.7% of reviews — better
Number of ratings37 — better13
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size110 MB163 MB
Age rating4+4+
DeveloperNukkuaaYudemon LLC

Customer experience

sleep² sleeptracker & analysis

All ratings37 ratings
Positive56.8%
Neutral8.1%
Negative35.1%
Written reviews60 reviews
Positive61.7%
Neutral6.7%
Negative31.7%

Yudemon HRV

All ratings13 ratings
Positive84.6%
Neutral15.4%
Negative0.0%
Written reviews12 reviews
Positive91.7%
Neutral0.0%
Negative8.3%

In-app purchases

4 purchases

sleep² sleeptracker & analysis

Subscriptions2
  • sleep² PRO$9.991 Month
  • sleep² PRO$79.991 Year
One-time2
  • sleep² intensive program$39.99
  • sleep² intensive program$99.99
4 purchases

Yudemon HRV

Subscriptions4
  • Yudemon Pro (Monthly)$2.991 Month
  • Yudemon Pro (Monthly)$4.991 Month
  • Yudemon Pro (Yearly)$19.991 Year
Show 1 more
  • Yudemon Pro (Yearly)$29.991 Year

Questions

Is sleep² sleeptracker & analysis free?
sleep² sleeptracker & analysis is free to download, with in-app purchases available.
Is Yudemon HRV free?
Yudemon HRV is free to download, with in-app purchases available.
Which has better reviews, sleep² sleeptracker & analysis or Yudemon HRV?
Yudemon HRV is rated higher. sleep² sleeptracker & analysis averages 3.6 out of 5 from 37 ratings, while Yudemon HRV averages 4.5 from 13 ratings.
Do sleep² sleeptracker & analysis or Yudemon HRV have ads?
Neither sleep² sleeptracker & analysis nor Yudemon HRV shows ads.
Which is updated more often, sleep² sleeptracker & analysis or Yudemon HRV?
sleep² sleeptracker & analysis ships an update every 2 weeks, and Yudemon HRV every 2 days. Most recently, sleep² sleeptracker & analysis was updated on October 17, 2026 and Yudemon HRV on October 13, 2026.

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