I just discovered today that the AMSAT Droid App had been placed on the Amazon App store. I have used an installation of the earlier version HAMSAT Droid app and was not sure if the author would get the free version beyond Google Play. I gave it only the second review on the Amazon store, a 5. It works as advertised and the improvements that the author made, in preparation for the paid version are well received. The Map view now gives a big view to match the orientation of your device. A big improvement for me is the ability to use grid squares to set location on a device like the Kindle which is not natively location aware. The older version would not recognize the period used in Lon/Lat decimal notation. In the past, I had to go to another application to enter numbers with the . and then copy/Paste into Hamsat Droid. Glad to not have to do this anymore.
Still the basic operation is pretty much the same but I am hoping that when he gets the paid version going on Google Play, it will ultimately migrate it's way onto other App stores like Amazon. I am very willing to pay the bucks to support a good programming effort.
AMSAT Droid is a great app for basic satellite pass location. I use it often when working with Scout groups on Radio Merit Badge classes where we do a satellite contact.
Keep up the good work.
Tom Schuessler, N5HYP n5hyp@arrl.net