What's New
minor changes
App Description
Heart Rate Variability Logger lets you record, plot and export time, frequency and non-linear HRV Features (includes experience sampling, RR-interval correction, DFA alpha 1 for aerobic threshold estimation in real-time, comparison between recordings, activity monitoring & step counting, location tracking).
Heart Rate Variability Logger requires a Bluetooth Low Energy (also called Bluetooth Smart or BLE or 4.0) heart rate sensor (we recommend Polar H7 or H10)
Main features:
- Extracts, plots, stores and exports heart rate, rr-intervals, time and frequency domain heart rate variability features (AVNN, SDNN, rMSSD, pNN50, LF, HF, LF/HF, alpha 1 from DFA)
- Configurable experience sampling for events annotation
- Comparison between up to 3 recordings lets you get a better understanding of differences in HRV under different contexts in a glance. The comparison modality includes also Outlier removal
- Activity tracking: step counter or accelerometer derived motion intensity for user context (step counter only for iPhones 5S)
- Location tracking, either using GSM/WiFi networks (low battery consumption) or GPS (high accuracy)
- Configurable time window for features computation (choose between 30 seconds, 1, 2 or 5 minutes)
- RR-intervals correction can be enabled to prevent ectopic beats or artifacts from affecting HRV features
- export for Kubios
- Filters data based on the selected threshold
- Shows HR in the app icon
- Data export using iTunes or Dropbox
- Tested for recordings longer than 24 hours
Please note that continued use of GPS running in the background can dramatically decrease battery life.
App Changes
- August 15, 2013 Initial release
- August 20, 2013 New version 1.2
- August 30, 2013 New version 1.4
- October 11, 2013 New version 1.6
- October 18, 2013 New version 1.8
- November 20, 2013 New version 2.0
- November 20, 2013 Price increase: $3.99 -> $4.99
- December 18, 2013 New version 3.0
- December 28, 2013 Price increase: $4.99 -> $5.99
- January 03, 2014 New version 3.2
- January 07, 2014 Price decrease: $5.99 -> $4.99
- January 09, 2014 New version 3.2.2
- January 31, 2014 New version 3.4
- January 31, 2014 Price increase: $4.99 -> $5.99
- February 11, 2014 New version 4.0
- February 13, 2014 New version 4.2
- February 19, 2014 New version 4.2.2
- March 07, 2014 Price decrease: $5.99 -> $4.99
- May 15, 2014 New version 4.4
- May 17, 2014 New version 4.4.2
- May 22, 2014 New version 4.4.4
- June 07, 2014 New version 4.4.6
- September 05, 2014 New version 4.4.8
- September 26, 2014 New version 4.5.0
- February 03, 2015 New version 4.5.4
- February 23, 2015 New version 4.5.5
- April 22, 2015 Price increase: $4.99 -> $5.99
- June 24, 2015 New version 4.5.6
- September 19, 2015 New version 4.5.8
- February 19, 2016 Price increase: $5.99 -> $7.99
- July 27, 2016 Price decrease: $7.99 -> $3.99
- November 05, 2016 New version 4.5.9
- November 05, 2016 Price increase: $3.99 -> $7.99
- December 13, 2016 New version 4.6.0
- December 28, 2016 Price increase: $7.99 -> $8.99
- June 13, 2019 New version 4.6.2
- June 13, 2019 Price decrease: $8.99 -> $7.99
- June 13, 2019 Price decrease: $8.99 -> $7.99
- June 14, 2019 Price decrease: $8.99 -> $7.99
- June 14, 2019 Price decrease: $8.99 -> $7.99
- June 15, 2019 Price decrease: $8.99 -> $7.99
- June 15, 2019 Price decrease: $8.99 -> $7.99
- June 16, 2019 Price decrease: $8.99 -> $7.99
- January 26, 2021 New version 4.6.8
- January 26, 2021 Price increase: $7.99 -> $9.99
- May 06, 2021 New version 5.0.6
- August 05, 2021 New version 5.0.7
- September 16, 2023 New version 5.1.1
- November 15, 2023 New version 5.1.2