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Re:Show HN: Heart Rate Zones Plus – The first iOS app I ever... by ellisv on Tuesday April 29, 2025 @08:20AM (#43831608)
My speed issue was in getting the data (although I think it is fixed now).

The other big performance problem I've had is the simulator hanging when I try to use Swift Charts.

My primary interest was in monitoring my total zone 2 time for cardio workouts where I spend at least 30 consecutive minutes in zone 2. However I've reduced the scope for now while I get the minimum viable app up and running.

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