Here's a recommendation for an iPhone app that is both entertaining and informative: iGorilla. With this app you can follow the day-to-day lives of several mountain gorilla families that reside in one of Africa's most important national parks. Information is regularly updated and you can see pictures and videos to learn about specific family individuals.
The Virunga National Park in the Democratic Republic of the Congo has been one of the vanguards in African wildlife protection and has put considerable effort into their mountain gorilla program by developing a network of trained rangers to reduce poaching. Of the 720 remaining mountain gorillas on this planet, 200 of them live within the park's boundaries.
While the Virunga National Park is a well established park (second oldest in the world, next to Yellowstone), it too struggles for funding. For the gorilla program, considerable funds go into ranger training, uniforms and salaries, and equipment - money well spent in establishing a strong conservation and protection presence within the park.
You can download the app through the Apple store or right on your iPhone for $3.99. It's well worth it as a portion of the proceeds goes to the park.
Please note: don't get confused - there's another app called iGorilla! (with an exclamation mark) that is a game.
Read more about the iGorilla app.
Read more about the Virunga National Park.