Question for Android Users

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So yeah, I'm late. I just upgraded to a newer android this weekend that has an activity tracker. I have both S Health and Google Fit downloaded. My question is, for example today, I am getting a difference of approx. 1000 steps between the two apps. Anyone else experiencing that? Oh and which one is syncing to MFP, It looks like Fit but I just wanted to get some feedback...

Any apps that are more accurate? UA (Under Armour) just seems very inflated