Google Maps Privacy Nutrition Label
Early last week Google finally updated Maps for iOS and its attendant privacy label. As you suspected, Google is collecting a lot of personal data.
Apple requires that any app or app update has a privacy disclosure, now often called a "privacy nutrition label." The labels need to identify all of the data the developer or its third-party partners collect with a few, very explicit exceptions.
Google was slow to release app updates this winter and, as we noted in early March, had not added many of the labels. Since then, Google did update most of its apps. And early last week Google finally updated Google Maps and its attendant privacy label.