The NASA App is available for any iOS (iPhone, iPad, iPod touch), Android and Fire OS (Kindle Fire) device. Here’s how:
iOS: Tap on the App Store icon and then search for NASA. Tap get next to the NASA App icon, then tap install and finally then enter your iTunes Store password.
Android: Tap on the Play Store icon and then search for NASA. Tap on the NASA App and then tap install.
Kindle Fire: Tap on Apps text on the top bar and then tap store in the upper right corner. Tap the search icon and then enter NASA. Tap on the NASA App and then tap install.

Alternatively, here’s the direct URL to the app on each platform:
iOS: http://itunes.apple.com/app/nasa-app/id334325516?mt=8
Android: https://play.google.com/store/apps/details?id=gov.nasa
Kindle Fire: http://www.amazon.com/gp/product/B00ZVR87LQ
Here’s a list of the features:
  • · Easily view the latest NASA photos, videos and feature stories
  • · Share everything you discover with friends on Facebook and Twitter
  • · Rate photos and videos, and then check out which ones make the Top Rated list
  • · Choose the best NASA images and make them easy to find using the Favorites feature
  • · Save images to your mobile device
  • · Get information about all of NASA's current missions
  • · View live streaming of NASA TV and the High Definition Earth Viewing (HDEV) experiment on the ISS
  • · Get the latest launch information & view countdown clocks
  • · Get the current list of upcoming International Space Station (ISS) sighting opportunities for your location, plus sighting opportunities for other NASA missions (Fermi, Hinode, Hubble...)
  • · Track the location of the International Space Station and other NASA Earth orbiting satellites in real-time.
  • · View all the NASA Tweets from around the agency in one place
  • · Display a map with information and links to all of the NASA visitor centers
  • · Checkout the featured content and program sections
  • · View the Earth as Art image collection and interactive map
  • · Listen to Third Rock Radio (alternative rock radio station)