With the wars in Iraq and Afghanistan, and manhunts in places like Yemen, the military applications, and the corporations devoted to serving them (Lockheed Martin, Northrop Grumman), came to dominate the skyscape.
Instead I would just buy a kindle book which I can access on a computer or phone with one purchase and when I upgrade my phone, I just uninstall the app on the old one and install it on the new one unlike apps like Skyscape.