I went from idea to implementation extremely fast, but I am also quite happy with the value that a simple prototype can deliver. https://GeoTreat.com/ - With a tiny snippet of code, you can drop "Treats" on your web pages. That means, depending on your visitors location, they will be shown a special (modal popup) promotion of your choice. The treat can be placed anywhere in the world and have any radius.
Have a moment to spare any feedback on GeoTreat.com?
The home page has a quick (and sloppy) 1min 30sec video that gives a quick overview and demo.
If anyone has any criticism, feedback, questions, I would absolutely love to hear what you have to say.
If anyone wants to see a Live demo, let me know your general whereabouts in the comments. I will place a treat on your area and send you a URL.
-Jordan