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Show HN: Heart Rate Zones Plus – The first iOS app I developed

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Re: Show HN: Heart Rate Zones Plus – The first iOS app I developed

#31
Congratulations!

I also wrote an iOS app to do this exact same thing, although it’s unfinished and unpublished. I had a lot of trouble getting the app to perform well (what’s your secret?!)

Couple of things I implemented that you may want to consider:

1) onboarding flow to help users setup the app on first launch

2) filter certain workouts to include/exclude by type, duration, etc

3) home screen widget

Id love to chat if you’re open to it.

Re: Show HN: Heart Rate Zones Plus – The first iOS app I developed

#32
Congrats! I've been wanting exactly this app. I paid $5.99 for HealthFit trying to get similar information, but it doesn't (afaik) show the weekly/daily zone summaries.

I'd really love to see last week's information. Especially since you launched on a Monday, I'd love to have a new-user experience that shows me last week's info.

Other misc feedback:

1. Upon launching the app, I didn't see any data. Had to go into the gear menu -> approve health data sharing. I think it'd be better to push the user to this approval flow on their first session? (Edit: Aha, after watching the video: settings -> time period -> last 7 days)

2. Neither here nor there, but I wanted to download this so searched the app store on my phone for "heart rate zones plus" and this app was #16. I'm curious if anyone in the discussion knows -- how is this search rating determined? Is there anything the author can do to improve the ranking?

Re: Show HN: Heart Rate Zones Plus – The first iOS app I developed

#35
post #19

Can an iPhone app figure out your blood pressure (with sufficient reliability)?

Not now, but future Apple Watches are rumored to track blood pressure through analysis of pulse transit time: https://www.empirical.health/blog/apple-watch-blood-pressure...

Oh that's clever! Garmin's watches[1] estimate stress levels by variability of pulse rate, and they estimate breathing rate by looking for sinus arrhythmia (the benign change in heart rate speeding up when breathing in and slowing down when breathing out) which is cool. I wonder if any pick up ectopic beats with the normal continuous pulse sensor and not the 1-lead EKG thing?

[1] possibly other brands too, I didn't look

Re: Show HN: Heart Rate Zones Plus – The first iOS app I developed

#36

I like this visualization! I'm not doing a kind of training these days where it would be useful for me, but I wish I'd known about something like it when I was. Do you support Apple watch? I never actually targeted that or owned one (I like a much more stylish smartwatch!) and thus don't immediately know how to spot that integration on an App Store detail page, hence the need to ask. But I get the sense a lot of folk…

Heart rate zone training is always useful for general health. Unless you have an ultra terminal illness you would probably benefit from some zone 2 training...basically just a brisk walk(where you can still have a conversation, but you feel like you're putting in more work than sitting on a couch, probably around 125 bpm) for 45 mins 2 or 3x a week will greatly improve the heart health for most people.

Re: Show HN: Heart Rate Zones Plus – The first iOS app I developed

#37
post #32

Congrats! I've been wanting exactly this app. I paid $5.99 for HealthFit trying to get similar information, but it doesn't (afaik) show the weekly/daily zone summaries. I'd really love to see last week's information. Especially since you launched on a Monday, I'd love to have a new-user experience that shows me last week's info. Other misc feedback: 1. Upon launching the app, I didn't see any data. Had to go into the…

This is a horrible abuse of computing power, but what I do is track my heart rate zones in Polar Beat (for my brand of heart rate monitor), and then I just screenshot the summary page for the workout. Then, once every week or two, I just dump my screenshots into Gemini and ask it to produce a report, where I get things like weekly averages, moving averages, highs & lows, etc.

Re: Show HN: Heart Rate Zones Plus – The first iOS app I developed

#38
post #22

I would prefer an adaptive approach where the user also enters perceived difficulty and the app learns the correlation between heart rate and perceived difficulty to figure out the zones. I consistently have high heart rate during exercise: a normal walk might get my heart rate to 130, and a moderate run (10:30/mile) might get my heart rate to 180. A very fast run gets my heart rate to 215 (this is beyond the max mea…

Have you talked to a doctor about this? It's certainly not normal. Do you have hyperthyroidism, anemia, or anything like that which can cause elevated heart rates during exercise?

Re: Show HN: Heart Rate Zones Plus – The first iOS app I developed

#39

Congrats on the launch! I really would have thought it’s already part of the iOS built in apps! You mentioned it’s your first app. Did you vibe code your way through it or did you heavily use AI? I played around with Swift SwiftUI and I felt that AI helped me a lot in contrast to my day to day job, humongous code base, I can’t get AI to get those mythical 100x productivity gains, more like 0.37x, but for new projects…

Okay, admittedly I'm somewhat of a greybeard by this point... However... I thought that vibe coding was .... exactly heavily using AI... I know this not the place; but what exactly is your definition of 'vibe coding' since you've used it with such confidence in your comment perhaps you can enlighten this programmer..

My definition is that heavily using AI for autocomplete or to write well defined methods is using AI, but vibe coding is instructing AI agents to complete a task and squinting at the multi-file results (e.g. "Now plan out how we will store this data... Now execute that plan.").

Claude Code is very vibe code.

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