Are you curious how many countries you've sold to? Have you hit all 50 US states yet? This app does just one thing. Once you authorize the app to access your sales data, it creates a map showing where your customers are. The map will be updated nightly, so you can return to view your progress or even embed the map in your own website or blog.
Only the location data from Etsy is used. Details about you and your customers are not stored or displayed by the app. The pin locations are correct down to the zip code only, so the street addresses of your customers stay private.