Proximi.io Android is a unified Java SDK to all mobile positioning technologies that allows you to build location-aware applications. Access all the major mobile positioning technologies through a simple platform, then use the location data to trigger action flow chains to gain realtime analytics about your app users' movements.
If you’re writing a serious application, on the web or otherwise, you’ve got to have good logging. In the context of application development, reading logs is my personal favorite method for tracking bugs and rooting them out. A service like Loggly is perfect for programmers like me. It provides an easy to use web interface with searching capabilities that allows you to see what your application is logging at any time that you’d like to check in. Debugging with Loggly is nice, but it’s just the tip of the iceberg, thanks in part to its Loggly API.