I can't remember if I posted a response to this previously, but we are actively working on an Android version of ExploreStars. At the current time, we suggest that people use an 8-inch Windows tablet that can be had for around 100 US as the hand controller. Once the Android app is available you can use an 8-inch Android tablet also that can be bought for around 100 US.
Director Electrical Engineering
Explore Scientific, LLC.