Is Google API usage limits per device?

Getting Started Newbie Questions
#1

Hello,

I need to call a google API URL to get the current county of the GPS coordinates using reverse geocoding. I read there is a 2500 limit per day but that is also per IP address. So if several people are using my app will anyone have the same API address? I need to call this URL every 45 seconds which is within 2500 per day but only if that is per device. I tried searching and cannot find this answer.

Thanks,

Warren

#2

Each user’s device has a unique IP address. 

#3

Each user’s device has a unique IP address.