This "book" is pretty weak. Mixing iphone, Android, and BlackBerry together in one book makes the material hard to follow. The reviews are all mixed together, not in separate chapters for each device.
Also the reviews are very weak. You get the name of the app and a couple of sentences of description. No screen shots. No feature listings. No reasoning on why the author chose a certain app over its competitors. No mention of version dates or version numbers. No links to app web sites or stores.
Much better reviews are available at numerous free web sites. I would recommend several of them to my friends instead of this book.