Nat Geo TV: Live On Demand is a free streaming app for iPhone users that offers a vast collection of National Geographic shows and documentaries. With this app, you can stream full episodes of popular series like Genius: Aretha, Secrets of the Zoo: Down Under, Alaska Animal Rescue, and many more.

The app also allows you to search and discover new episodes and groundbreaking documentaries. You can explore curated collections to find shows that match your interests. Moreover, you can sign in with your TV provider to unlock episodes, specials, and watch live TV. For a personalized viewing experience, you can create a free account that will save your favorite shows and create a personalized home screen based on your viewing behavior.

Nat Geo TV: Live On Demand is also available on tvOS. Please note that the most recent full episodes and the NAT GEO TV live stream require a participating TV provider account. Additionally, the app features Nielsen's audience measurement software, which allows you to contribute to market research, such as Nielsen's TV Ratings.

Overall, Nat Geo TV: Live On Demand is an excellent app for nature lovers who want to stream their favorite shows and documentaries on the go.