Chuck,
You probably can't see the App on the Play Store due to your older Galaxy Tab possibly being pre Android 4.0.
As for the base map, we are about to release a new version 7.7 on the iFly 720, 700, 520 that will update the base map colors, resolution and content. This is currently in beta testing. We are also working to bring the 720 up to date with the same interface and look as the App. Stay tuned, this is planned for this Spring.
We are working to add additional content like VORs, terrain topo, better obstructions, and additional map content to the Vector Mode for our next major release. Weare committed to raising the bar on the Vector Base Map.
Thanks for the kind comments about our app, please pass the word along to fellow Android and iPad pilots. Have a great week.