Reviews and Recent Comments:

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  Jason Norris: Works perfectly and gives me an accurate method to ensure I'm training below my aerobic threshold without a max HR estimate. Please add the threshold range feature I see on the iOS ver, and thank you!
  User rated this game 5/5 on 2022-02-09



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  Ashley Masen: Very easy apk, but what it does is unbelievable. Really good to present what "simple" actually is.
  User rated this game 5/5 on 2021-04-13



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  Jayant Golchha: Very useful apk, especially the dfa-a1 metric, displayed in true time. Just a few improvements that should create this apk even better: - A larger display for the a1 figure, perhaps alongside HR, so that's easier to see - Vibration at each interval - Annoucement of a chosen metric via sound / earpiece, instead of having to look at the screen each time.
  User rated this game 5/5 on 2021-12-14



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  Mark Dexter: Absolutely good! To be able to search my LT1 or AeT without any painful lactate measurements?! Marco, as always, you've knocked it out of the park!! Thanks you
  User rated this game 5/5 on 2021-03-20



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  Stef Coetzee: Modernize 22Apr2021 - on longer runs (after modernize today) still only collects first few readings and stops. Otherwise works ok with the Garmin Pro strap alongside logging on the Garmin watch. Good apk! Extremely useful for us older runners to gauge LT1 for MAF base building, where typical formulae fall off when trying to compute a target HR. Would like the Alpha1 overlaid on the HR trace, to facilitate understanding of target HR and pace in specific places on known routes.
  User rated this game 5/5 on 2021-04-23



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  Neil Pugh: Seems to me like this should be a mini game changer regarding aerobic training assessment. Absolutely gorgeous work by Marco and the squad.
  User rated this game 5/5 on 2021-03-19



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  Michał Woźniak: Works as advertised.
  User rated this game 5/5 on 2021-03-21



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  Dmitry Molotkov: Constantly loses connection to hrm when running in background. Polar bear with exact same settings on same smartphone don't do that. Also true time stamp ( in addition to time from.start of recording) would be awesome in charts/exports
  User rated this game 3/5 on 2021-03-25



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  Bruce Rogers: Unbelievable apk for monitoring hrv in true time. The only phone solution for dfa a1 accessible.
  User rated this game 3/5 on 2021-11-18



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  Jim Emery: Easy HRV Logging apk. Works well with my Garmin HRM-PRO chest strap. The Alpha 1 measurement has helped me understand my aerobic threshold. It would receive five stars if I should see my Alpha 1 value on my Garmin watch via an IQ Apk.. next step perhaps?
  User rated this game 4/5 on 2021-03-27



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  Max Eastwood: DFA a1 showing weird results. With HR=160 which is 100% above my aerobic threshold it shows DFA a1 = 1.7. Mode was set to workout, artifacts count was low. I'm using H10 with water applied... Also when i did meditation DFA a1 goes below 1, which is weird also...
  User rated this game 2/5 on 2021-09-05



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  Ian Peake: Would be useful if it would reliably hold running in the background.
  User rated this game 2/5 on 2021-05-03



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  Shane Wilson: Having problems with Alpha 1, set to workout, 2.mim window. Only receive 4 or 5 samples on a 40-60 min try. Everything else seems fine.
  User rated this game 3/5 on 2021-04-08



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  M.: Beside the extremely primary and cryptic interface I was expecting the apk to tell me what is the exact HR value for my aerobic threshold, it seems like it does not or I cannot figure out how to. It just tells you the DFA Alpha 1 number among another obscure values. Would one need to wear two straps (most BT straps only let one connection) and figure out at what HR value corresponds DFA alpha of 0.75? I will modernize my rating if I can figure out more or the apk gets updated with some sort of assist or manual. Yes I've seen the FAQ but it does not reply this question ------------------------------------------------------------------Modernize after developer feedback: I will reach out to the email provided but why do I need to go the additional mile for a primary functionality that is touted as one of the main features? Quote from apk description: 'aerobic threshold estimation in real-time'
  User rated this game 2/5 on 2021-03-18



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  Paul W: Wouldn't connect to my garmin hr strap. Very limited options and flexibility in menus.
  User rated this game 1/5 on 2021-04-07



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  Andrew A: Disappointed that the creator of the apk now declares it's usefulness as dubious. A waste of cash it turns out!
  User rated this game 1/5 on 2022-03-22



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  Bogdan Dumitriu: Bug report: after the recent modernize, the apk takes about a min to begin (there's an empty screen for about a min and then the UI appears).
  User rated this game 4/5 on 2022-07-08



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  John L: Stopped working all of a sudden after 5-10 awesome recordings. Uninstalled and reinstalled too
  User rated this game 2/5 on 2021-06-07



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  Alex V: Difficult to use. Not very helpful for training to target heart rate. Save your cash. There's no method to receive a refund.
  User rated this game 1/5 on 2021-11-25



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  Joseph R: Always stops recording.
  User rated this game 1/5 on 2021-08-05