I was unable to find any useful information that would allow adding any map. The website is filled with page does not exist messages. This appears to be simply a means to steal $9.95. Google Play should review this app and probably remove it. I went so far as to load a version on a windows PC. That was equally unhelpful. The PC was v4.4. The android device was Samsung TM-280. The forum appears to be disfunctional.
Since i knew the desktop version and since I saw many positive reviews I paid the price and tested the app. One feature is lacking (quilting of charts) which renders the app completely useless. While quilting does not work (on 3 different devices) I'd say it is a complete waste of money. When quilting works it might be useable for navigation backup, especially when the oeSENC charts can be used.
The one and only Was good and got even better. Top app for navigation!
Fantastic. AIS integration very helpful
Love opencpn on laptop and Raspberry pi 3 All my attempts so far to install charts on Android version have failed, CM93 Phone Wileyfox swift. Free version and this paid for version same result , point charts at folder containing charts and app becomes non responsive. Initial 1 star updated to 5 star, after checking on forum discovered it read/write privileges on Android needed amending. Thanks for link Dave
Working Great on Samsung Tab 4 Happy to have the sanctioned OpenCPN Android app. Streaming all sorts of NMEA data to/from a Raspberry Pi 3. Comforting redundancy. All I have to do now is get off the dock and go cruising.
OpenCPN for Android Version 1.0.12 has many improvements affecting performance, reliability, and security. Visible user interface changes include the following:
1. French language support fully implemented.
2. Improved display rendering on high-display-density devices, especially for Vector charts and AIS overlays.
3. Improved user interface for Chart Downloader PlugIn.
4. Improved support for SDCards.
5. Support for additional generic USB device inputs, including AMEC-150 AIS receiver.
If you need to see your coordinates at all time and in all apps this is your app