I like how easy it is for me to use, even though there are many features that i don't know about yet. It's been very helpful so far! There aren't any downsides as far as i can see at this moment. The only thing is that sometimes when you're using it with Google maps or Apple Maps, they will not show up correctly. If your app requires users to be able to locate themselves within an area (e.g., store) then proximi.io would make sense for you. We were looking into different ways to implement geofencing functionality for our customers who have physical stores/locations. This was one way we found that worked well for us.