The only app I currently have under development, is tagged for now as "SerialNavtex". The basics are now all working.

Up to now, to use one of Nasa Marine's pre-Bluetooth Navtex serial interface receiver engines, you would have needed to take a Windows laptop aboard with you. With this app you can download, store, and view messages on an Android smartphone or tablet using a standard USB-serial interface and a special USB-C or micro-USB adaptor. Once downloaded (about 30 seconds) you can disconnect the cable and view the messages at your convenience. Contact me if you are interested.