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A comment on Show HN: Heart Rate Zones Plus – The first iOS app I ever developed. Parent comment

Re:Show HN: Heart Rate Zones Plus – The first iOS app I ever... by JimDabell on Tuesday April 29, 2025 @02:58AM (#43829434)
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.
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