[DugwayDuke]

It appears that Apps exist to mine data. For example, I have temperature probe that transmits the temperature of the meat to my cell phone. Handy when you don’t want to stand by the grill. Why does this app need my location data? It won’t work unless I turn location data on.

[Zhang Fei]

Why does this app need my location data? It won’t work unless I turn location data on.

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Google pays the free app writer a portion of the revenues it makes from selling ads. Your location gives Google the ability to run local ads. That is also why so many websites ask permission to get your location info. So they can run an ad from your local Chevy dealer, rather than some generic nationwide ad.