FactBook is described as follows:
FactBook is an app that literally puts the world at your fingertips. Want to know what the population of a country is? How about their standard of living and the general life expectancy? What are their military expenditures? How many people own a cell phone?FactBook (ad-free) is rated at 4.3 stars in Google Play. It is rated at 3.4 stars in the Amazon Appstore.
These are only a sampling of questions with ready answers in Factbook. You will find a wide range of information on every country in the world, grouped into the general categories of Geography, Population, Geography, Government, Transportation, and Military. A carefully crafted user interface allows easy and intuitive navigation.
Research, explore, and compare information for nations all over the world. The application processes statistical data to produce charts and graphs that provide more appealing and easy-to-digest representations of the information. FactBook allows you to quickly compare all countries with respect to a particular statistical category. For instance, you can compare the GDPs of all countries and the app will generate a graph that clearly shows how each stacks up to the others. An embedded Share key in the hard menu makes sharing information easy through messaging, email, or any other networking program you wish you use.
FactBook draws its WorldStats information from the CIA World Fact Book and from the United Nations world database.
That 4.3 star Google Play rating is generated by over 100 ratings, so it's a pretty good indication of the app's performance. In addition, there is a free version in Google Play that has a 4.2 star average and over 1,100 ratings overall.
Why then, the big difference in the Amazon Appstore? To be honest, in the past we've seen much larger variations between the two Android Markets.
There are also the normal spoof ratings in the Appstore and at least one rating criticizing Amazon.com for making a free app in Google Play FAOTD, simply because the reviewer didn't notice the second version called FactBook (ad-free) in Google Play.
You can see a slideshow of screenshots here.
what it means to developers.
Amazon.com opened up the Appstore despite a lawsuit by Apple, which has previously trademarked the term "App Store." Microsoft has filed an appeal against that trademark, saying the term is too generic. Amazon.com has responded to the lawsuit in the same manner.