[kensam]

I used iOS Health App, however it is only able to make use of information from one tracker at the same time, and there's no approach to establish which tracker's data needs to be used for which times.Therefore I wanted to ask if there is another apps or other way in which I'm able to keep the data from many trackers.
 
I did wear some kind of Chinese brand before, i really do not know exactly what is the name of the product because of my friend gave it to me as a present.However, I was thinking of getting the Xiaomi Mi Band 3 because of the review is great and also you know, it is cheap.
 
I was just pondering if there's a method to keep your data if you wish to move from one model of fitness trackers to another.