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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

#41
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…

There are apps that do this. Check out Zolt or Gentler Streak.

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

#42

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.

I no longer do HIIT of any type, but do frequently leave my couch and indeed my home. I wear a smartwatch that reads pretty close to my real heart rate and is, if not ideally accurate, then at least sufficiently precise. More than that these days would be wasted on me. But I appreciate your motivation in commenting, and confide many here might benefit by your good effort.

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

#43
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...

I'm skeptical, even classic wrist blood pressure monitors with a cuff are notoriously inaccurate compared to upper arm monitors, could a watch really come close with even less data?

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

#44

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..

Vibe coding is heavily using AI, but heavily using AI is not necessarily vibe coding.

Vibe coding is when you disregard the code altogether and build something throwaway for fun that you don’t care about maintaining:

> There's a new kind of coding I call "vibe coding", where you fully give in to the vibes, embrace exponentials, and forget that the code even exists. […] It's not too bad for throwaway weekend projects, but still quite amusing. I'm building a project or webapp, but it's not really coding - I just see stuff, say stuff, run stuff, and copy paste stuff, and it mostly works.

https://x.com/karpathy/status/1886192184808149383

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

#45
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…

Hi thanks for the feedback. I'm definitely thinking about adding some more historic data and also week over week comparison.

about 2. from my understanding good ratings and usage would help the ranking in app stores. But I don't expect some good positioning there (already) with an app being 4 days old.

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

#46
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.

I hope it's now more easy. I will try to add some more historic data in an update soon. Highs and lows I think should be possible too.

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

#48

Not sure if it is mentioned in the app description, but how is heart rate calculated? Using the Apple Watch?

It uses Apple HealthKit, so anything that writes heart rate data to Apple Health. In most cases this will be Apple Watch, but other devices with heart rate sensors should work too.

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

#50
post #5

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…

> I really would have thought it’s already part of the iOS built in apps! Between the Apple Watch and Fitness app, you can see your heart rate zone during a workout, and then review workout heart rates/zones over time afterward. https://support.apple.com/guide/watch/view-heart-rate-zones-...

Yes the is some stuff already in Apple Health, but I for me personally had the need to see not just the zones for single workouts. So with Heart Rate Zones Plus I can see the zones I was in each day, week, last 7 days, month and last 30 day. Also the option to just check time in moderate and vigorous exercise per e.g. week was missing for me. I try to hit the recommendations of 150 moderate minutes and 75 vigorous exercise minutes here - and be able to check that in a fast easy way.

Also I have a coworker who is never actively tracking the workouts in the gym. As I'm using all heart rate measurements, I would still give you an idea of you zones. Also if you run up the stairs Heart Rate Zones Plus might catch that as high zone.

In addition the calculation methods of Apple for the Zones are just "one method" I added a few more options I found in scientific literature of how to estimate, because depening on you fitness and body in general it may be different for you.

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