National Geographics Weird But True app is free this week. Our review over at GiggleApps noted that:

Very easy to use, the app is a random fact generator filled with interesting tidbits that kids and adults will enjoy. Each page has its own weird but true information, with bright colors and many vivid photos of related images used to illustrate what is being explained, and I also appreciate the creative use of fonts and design in general to fit the text onto the page in most interesting ways possible. These facts can be about animals, the human body, toys and other topics as the app has a plethora of information and it is great fun how varied sound effects are used per each page that in some way relate to the fact being presented.