I'm not here to defend the product. I'm not even a customer. I am still deciding what my preferred navigation device is going to be after owning many of the choices over the last 10 years. I've owned (or beta tested) Rand McNally, TomTom, Garmin, Sygic and CoPilot. I'm still searching for a product that meets my list of wants. This app isn't it either.
I have to disagree that they don't provide any information though. The description of the app is pretty clear that they provide routing specifically based on the RV attributes that you enter. Thats how it's fundamentally different than Google Maps. All of those settings can be explored for free after downloading the app. The app store listing also has a link to their website which has more information, screenshots and a PDF manual download.
To each their own. The point of this was not to claim product superiority over other products. The point was to simply let people know that there was another option.