The official app seems similar to me but maybe I'm missing your steps. There is a car icon that launches a list of navigation/routing apps and when you select one, it launches that app w/ routing directions, if the app supports routing. Cachly is the same for me once you select the Navigation icon for the cache. There is also a shortcut on the main map screen that if you long press the callout for a selected cache, you have the option to Navigate right from the main map screen without going to the cache first. See the screenshot I will attach.