
I've long been an advocate of phone apps that work with no internet connection. When it comes to map/navigation apps, there are several important reasons for offline use:
Like myself, there are people who—gasp—don't have a data plan on their phone
Others have limited data plans, and map apps can use a lot of data
Even for those with unlimited data plans, there are still many places where cellular coverage is bad or even nonexistent
Lastly, it's...