Actually a great app but seems to be portrait only and not for landscape oriented devices. Hate it when switching between two apps where one is selectable to use landscape which i preffere but the other forces you to use portrait. However love the simplicity in the design. Only the info needed is shown and nothing more.
This is a great app. It makes astronavigation accessible to any one who wants to give it a try. You can even begin without a sextant. The corrections and calculations are handled behind the screen leaving a simple user interface. Put in the information on the form and it does the rest. Particularly. Handy is the "NOW" button to accurately grab the sight time. The app allows access to all the data allowing a deeper understanding when and if you are ready. I recommend this for both real navigation and as a great learning tool. The app has been updated to do all the calculations when practising at home using a bowl of water as an artificial horizon.
One of the best written Android apps out there. Highly useful. I am a former aircraft navigator who used a sextant professionally.
Latest version crashes on Nexus 7. Display is partially cut off. At least the earlier versions sorta worked. Don't waste your money on this mess.
After I "Quit" the App, it won't restart, just hangs with a green band across the top of an otherwise blank screen. If I Force Stop it in App Manager, it will then start and run normally.
There appears to be an error it the Starstruck calculated altitude of the sights that I've used. For example: Date: Sept. 30, 2017, N47deg, W92deg, 19min. Moon: 23:32:30 UT, Starstruck calculated altitude is 15 deg 38 min, but the actual altitude should be 16deg 24min. Sun: 23:27:00 UT, Starstuck calculated altitude is 3deg 21min, but the actual altitude should be 3deg 07min. The actual calculated altitudes listed above have been verified with several other programs.
+ Output right ascension (RA) and declination (Dec) in sky map output
+ Improve sun and moon tracking
+ Fix bug on illegal input hang
Live earth map provide 3D Satellite map, current location, route and navigation