Doesn't seem like there's much of a straightforward way to do it in iOS 10 now, although there are a few things you can potentially try, as discussed at https://forums.macrumors.com/threads/how-do-i-disable-suggested-apps-based-on-location.1994181/Hwte to see WhatsApp showing this message at the bottom.
This is driving me nuts on several apps. I have disabled hands off and location services us disabled for those spps too and I am not sure what else i need to do.
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No go..They are off a long time ago...I think you can get rid of it by turning off "Location Based Suggestions" in Settings > Privacy > Location Services > System Services
I think you can get rid of it by turning off "Location Based Suggestions" in Settings > Privacy > Location Services > System Services
Doesn't quite seem like that works either (at least not for everyone): https://forums.macrumors.com/threads/ios-10-siri-recommended-apps.1997749/
Doesn't quite seem like that works either (at least not for everyone): https://forums.macrumors.com/threads/ios-10-siri-recommended-apps.1997749/