Black Cat Systems has released a new version of Elmer, bringing it to version 4.0. Elmer is a testing app designed for ham radio enthusiasts looking for preparation for the FCC licensing exams. The app now features OS X support. According to Black Cat Systems:

Black Cat Systems announces that Elmer version 4.0.0, has been released. This is the first version of Elmer for
Mac OSX, a MacOS version is also available.

Elmer creates sample tests to help you prepare for your ham radio written examination. It contains all FCC question pools for each of the three written exams: Technician, General, and Extra Class.

Elmer will grade your sample test, showing you which questions were answered incorrectly. It will also indicate if you passed the exam. Elmer keeps track of quick questions give you difficulty, and custom tailors exams to emphasize these questions.

You can find more information about the Elmer release at the Black Cat Systems Web site. Elmer 4.0 is available for US$24.99.