If all you want is the one mesasurenr, no reason to use HealthKit.
If you want to graph resting heart rate against steps per week over a year or two, that’s when HealthKit adds value. Or if your blood pressure cuff and scale are different brands and you want to see combined data.
If you want to graph resting heart rate against steps per week over a year or two, that’s when HealthKit adds value. Or if your blood pressure cuff and scale are different brands and you want to see combined data.