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Cardio Drift


This data field app calculates cardiovascular drift as percentage change between pace and heart rate ratio (PaHR-%) in the first and second half of the workout at the current time. Data field value is updated once a minute and calculations are done only when the timer is on. So this is an almost real time PaHR calculator of your cardiovascular fitness and dehydration level. Aerobic cardio workout target value is said to be 5% or below but can vary greatly due to various environmental and individual factors. Just google with words "cardiac drift", "aerobic decoupling" and "cardiovascular drift" to find out more.</p>

What’s New

Version 2.0.6: Updated device compatibility list (see the list).</p><p>Version 2.0.5: Updated device compatibility list (see the list). Fonts unified and scaled, blue background for values less or equal to +5.0 % vs. red for values above that and the app is labeled "Pa:HR (%)". </p><p>*** The graph version of this app (Cardio Drift Graph) is NOW released. ***</p>

Additional Information


This app requires access to:

  • Record additional information into activity files
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Average Rating: (7 Ratings)

Xavier Métral
January 1, 2020 | Version 2.0.6

Parfait !

October 2, 2019 | Version 2.0.6

This app doesn't seem to be working for me, and it pairs with the forerunner 920 I have. It's downloaded and shows up in my custom cardio profile that I've created, but the app itself doesn't record anything. I also have a separate heart rate zone app downloaded in the same profile, could that be causing issues?

Developer Reply
October 3, 2019, momoTM

Sorry to hear it is not working for you. Is there a chance that you tried the app without the other app so we could know about possible interference between them?

August 4, 2019 | Version 1.2.2-upd8

Your Cardio Drift (& Drift PWHR) is a really helpful app. But it is not compatible with my new FR945. Could you fix it? When will it be possible?

Developer Reply
August 5, 2019, momoTM

Hi! Thanks! I will soon release updated version of this app. Actually I have a new data field (Pa:HR) app with graphics in progress.

August 23, 2018 | Version 1.2.2-upd8

Is it possible to display the graph when selecting the 'expand' button to display the expanded graph?

Developer Reply
August 10, 2019, momoTM

The graph version of this app (Cardio Drift Graph) is released soon.

July 22, 2017 | Version 1.2.2

It's a good app。 But i think 60s it's too early. Because the body not warm yet. So i want to suggest that could the user adjust the start time (10mins)

Developer Reply
July 25, 2017, momoTM

Hi! Thank you for your feedback! I totally agree with you that 60 s is too early in a way. But this app is made for long endurance workouts. I think it is important to start counting Pa/HR early and as you have seen the value gets more stable during your workout. So this is made for long lasting workouts that last longer than one hour. The whole point of Pa:HR calculation is endurance calculation. But I will consider you suggestion when I update this next time.

July 5, 2017 | Version 1.2.2

is it possible to have a real time graph that can also changes colours when the % is good, in the average and not good?! see a different number anytime seems only a lottery and doesn't give a real perception of the actual ratio trend..

Developer Reply
July 25, 2017, momoTM

Hi! Good suggestion! I will think about this suggestion when I update this app next time. I have tried to keep this as simple as possible to save memory so I can not promise... Most devices should show positive numbers with larger font. So you might want that values lower than +5 should be in different color than +5 and over that. And a trending graph would be great too but it would eat memory and device compatibility. Thank you for your feedback!