It's as though there is a life cycle of an applications development. Early the application is sleek, perhaps not feature rich however instead simple, concise. Either through scope creep, changed ownership or continuous addition of features the application becomes bloated. This could also be the stage of commercialization by way of adds. Finally the application dies as users move onward.

This seems to be fairly common and it seems that as these applications and companies rise and fall that they each bring there own flavor to the mix.

Google maps was concise in 2012, today the app requires a greater number of user inputs to enter a destination for example