The above video shows the Companion running on a Nexus 7 - that's my main test device. There are versions for Windows, Mac, Android, and iOS.
I'm not sure about the Kindle Fire. I'd love to know how it works - there's no reason it wouldn't work although I'm not sure how to use a GPS with the Fire. I could use help with that.
For the Back button, yes, I know. It'll be added to mimic the back button in the screens. It's a v1.0 issue - I wanted to release all versions on the exact same day so I purposely limited platform-specific code that would delay everything.
I don't mind critical complaints, suggestions, or bug finding. Heck, that's how we get to v1.1 and beyond. There's a lot on the horizon and each step will make this get a little better.
For the blurry maps - again, give it a chance - it isn't a chartplotter. This is something new. You have to experience it out on the water in proximity of a hazard to understand. Here's the best comparison I can make. When ActiveCaptain came out originally, for the first 3-4 years we got consistent complaints/requests/suggestions that the website needed a way to print out the data. I purposely didn't spend time on that because the design of it all was based on the live and semi-live/offline data being available to all. Printing killed that. We got hundreds of emails about it - many said that, "no one will ever use this if you don't allow us to print out of the data." There were many who speculated over dozens of reasons why we didn't implement it. Few believed our vision of it that the live data was what mattered. Printing would actually hurt that effort.
Fast forward to the Companion. Blurry maps are the number one complaint. And here again, we're purposely doing it so as to not confuse the app with a navigation app. This is something different - it's the Up Ahead list that's important. That map is meant to give a very basic view about where you are. We will allow higher resolution tiles eventually - it's already built in - all that's needed is the user-interface to download them. But the vision for this is something else. Give that a chance. I've been using it for 2 years while underway along with some other capabilities coming next year. The map doesn't really matter for the functions that this new type of assistant will provide.
And by the way, no one asks us about printing ActiveCaptain data today.