Geomob is very easy to implement in our application, it has been working perfectly so far! I have not found any downside until now (we are using version 1). It's free service that you can use without problems or restrictions. You just need an API key from their website which will give access only if your app/site meets certain requirements of being used by many people simultaneously - this makes sense as well because we're developing enterprise software with big potential clients who would like us to be available at all times but also want good user experience when they choose what location to visit next within such system. We've developed some cool features including geo-fences around specific places where users should go after login into main site via smartphone browser.