We do not have a download file for the latest version (4.02.2), but you can try downloading it from the developer's site
Download version 3.8.2 from Mac Informer
Version: 3.8.2
Date update: Jul 24, 2014
File name: teighaviewer_macosx_x86_10.6dll_4.00.0.dmg
Size: 54.6 MB