[vinay_ys]

Google gives most privacy controls than any other major Internet company and actually works really hard to honor it.

Still, you can do two things to maximize your privacy:

1. In https://myactivity.google.com/activitycontrols, disable all activity history – everything should show "off".

2. In iOS, turn off background permission to all Google apps. (You can do this for most apps without loss in functionality). Then, turn off location permission all apps. For maps, give it location permission to "allow while using" only.

This is the least intrusive you can get to. Beyond this, you can also use different google account for different google apps to minimize data mingling. Further beyond that, you can just stop using google apps.