About SelfLoops HRV
SELFLOOPS HRV - Recovery, Readiness & Performance SELFLOOPS HRV is a professional-grade app to measure and analyze heart rate variability (HRV)-trusted by pro athletes, coaches, and researchers to track recovery, stress,...
SELFLOOPS HRV - Recovery, Readiness & Performance SELFLOOPS HRV is a professional-grade app to measure and analyze heart rate variability (HRV)-trusted by pro athletes, coaches, and researchers to track recovery, stress, fatigue, and training readiness. Using precise beat-to-beat (R-R interval) data from Bluetooth heart rate monitors, SELFLOOPS delivers highly accurate HRV insights used in sports science and performance optimization. Why track HRV? Heart Rate Variability (HRV) measures the variation between heartbeats and is one of the most reliable indicators of: 1. Recovery status 2. Training readiness 3. Stress and fatigue 4. Nervous system balance 5. Long-term performance Track your HRV daily to understand when to push harder or recover, reduce the risk of overtraining, and improve performance over time. Advanced HRV Analysis SELFLOOPS HRV provides the key metrics used in elite sports and scientific research: 1. RMSSD 2. ln(RMSSD) (HRV Score) 3. SDNN 4. pNN50 5. AVNN Key Features 1. Accurate HRV measurement from beat-to-beat data 2. Daily recovery & readiness tracking 3. Clear trends to monitor progress over time 4. Fast, simple, and intuitive interface 5. Compatible with leading Bluetooth heart rate monitors 6. Used in endurance, strength training, cycling, running, and fitness Device Compatibility Requires a Bluetooth Low Energy (BLE) heart rate monitor. For best accuracy, use a chest strap that supports R-R interval data. Not all heart rate monitors provide this data. Connection Tips If your sensor does not connect: 1. Make sure it is not connected to another app or device 2. Do not pair it directly in iOS Settings Disclaimer SELFLOOPS HRV is not a medical app and does not provide medical advice. Consult a qualified healthcare professional for any health-related decisions.
Version History Performance improvements and refinements throughout the app experience. 3.4 May 25 minor refinements 3.3 Apr 6 Enhanced trend detection for more accurate, reliable, and actionable insights. 3.2 Mar 26 More accurate HRV insights with improved analysis and advanced error correction 3.1 Mar 18 A new redesigned user interface plus other minor refinements and bugs corrections. 3.0 Mar 12 Improved the graphs design 2.7 05/17/2021 Bug fixes and performance improvements 2.6 01/06/2021 bug fixes 2.5 07/30/2019 bug fixes 2.4 07/02/2019 bug fixes 2.3 06/14/2019 dark mode 2.2 01/22/2019 minor bug fixes and updates 2.1 09/12/2018 UI refinements 2.0 10/30/2017 bugs fixing 1.9 05/10/2017 UI refinements 1.8 04/11/2017 minor bug fixed 1.7 10/27/2016 increased the scale on the y-axis, various refinements and bugs fixing 1.6 09/29/2016 updates for iOS 9 1.5 06/03/2016 improved algorithms accuracy 1.4 04/08/2016 changed from in-app purchase to paid app 1.3 06/26/2015 HRV data export by email and HRV data upload on selfloops.com plus general refinements and bugs fixing 1.2 11/15/2014 fixed minor bug 1.1 10/16/2014 1.0 10/04/2014
Previous Versions
Here you can find the changelog of SelfLoops HRV since it was posted on our website on 2016-10-15 14:03:43.
The latest version is 3.4 and it was updated on 2026-06-23 23:43:32. See below the changes in each version.
SelfLoops HRV version 3.4
Updated At: 2026-06-03
Changes: Version History Performance improvements and refinements throughout the app experience. 3.4 May 25 minor refinements 3.3 Apr 6 Enhanced trend detection for more accurate, reliable, and actionable insights. 3.2 Mar 26 More accurate HRV insights with improved analysis and advanced error correction 3.1 Mar 18 A new redesigned user interface plus other minor refinements and bugs corrections. 3.0 Mar 12 Improved the graphs design 2.7 05/17/2021 Bug fixes and performance improvements 2.6 01/06/2021 bug fixes 2.5 07/30/2019 bug fixes 2.4 07/02/2019 bug fixes 2.3 06/14/2019 dark mode 2.2 01/22/2019 minor bug fixes and updates 2.1 09/12/2018 UI refinements 2.0 10/30/2017 bugs fixing 1.9 05/10/2017 UI refinements 1.8 04/11/2017 minor bug fixed 1.7 10/27/2016 increased the scale on the y-axis, various refinements and bugs fixing 1.6 09/29/2016 updates for iOS 9 1.5 06/03/2016 improved algorithms accuracy 1.4 04/08/2016 changed from in-app purchase to paid app 1.3 06/26/2015 HRV data export by email and HRV data upload on selfloops.com
plus general refinements and bugs fixing 1.2 11/15/2014 fixed minor bug 1.1 10/16/2014 1.0 10/04/2014
SelfLoops HRV version 2.7
Updated At: 2021-05-17
Changes: May 17, 2021 Version 2.7
Improved the graphs design
SelfLoops HRV version 2.7
Updated At: 2021-05-17
Changes: Improved the graphs design
SelfLoops HRV version 2.6
Updated At: 2021-01-06
Changes: Jan 6, 2021 Version 2.6
Bug fixes and performance improvements
SelfLoops HRV version 2.5
Updated At: 2019-07-30
Changes: Jul 30, 2019 Version 2.5
bug fixes
SelfLoops HRV version 1.6
Updated At: 2014-10-05
SelfLoops HRV version 3.1
Updated At: 1970-01-01
Changes: More accurate HRV insights with improved analysis and advanced error correction
SelfLoops HRV version 3.2
Updated At: 1970-01-01
Changes: Enhanced trend detection for more accurate, reliable, and actionable insights.
Disclaimer
Official App Store Link
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