How do I determine my total app users from a specific country?

I want to find out how many app u开发者_开发技巧sers I have from a specific country. I know insights will show me how many users I have in each of my top twenty countries, but does anyone know how to find out your total number of app users from a country that is not in your application's top twenty?

Your options are basically:

1. Check the user's current IP with something like GeoIP ... I did some testing with GeoIP in the past, but the results didn't really convince me

2. Implement analytics code (I'm currently using Google Analytics)

3. If, and only IF this information is absolutely critical then you should look into the "user_location" and "user_hometown" permissions.

PS: Remember to update your Privacy Policy if you are going to do anything with the user's IP