Those who haven't purchased the new edition of Black's Law Dictionary may wish to consider using the mobile app version. The 10th edition of Black's Dictionary was released as an app in April and is available for Apple devices. The app provides, among other things, access to over 50,000 definitions, 1000 abbreviations and acronyms, and audio pronunciations for more than 7000 terms. The ability to track viewed definitions and a "Did You Mean" tool (that assists the user in finding the correct term), are just of the new features that were not available on the 9th edition of the mobile app. The app is $54.99 and is available on the App store. See iPhoneJD's review for more details.