I've been a lifetime boater on Lake Winnipesaukee and have always used the Bizer navigation charts. BizerNavigator seems like a natural extension to be able to use my iPhone with the recognized name. We have found it very helpful for navigating around the lake, but there are improvements that it needs. Honestly, I was hoping that those improvements would've been done over the winter, but they remain to be seen. which makes you wonder about the viability of BizerNavigator long-term if the company is not dedicating development resources to improving the user experience.
You absolutely need to be able to save routes, which BizerNavigator cannot do at this point. There's also no night mode, this is a big hindrance for using your phone for navigating at night because it destroys your night vision. Additionally, there's no way to change the orientation of the map while you're navigating. Many modern GPS apps allow you to choose showing north or the route at the top of the map, there is no option for this.
I call this a good first effort, but like I said, it absolutely needs development resources for improvement.